Percentage Calculator

Percentages are a quick way to compare numbers, track changes, and understand proportions. Whether you’re calculating a discount on an online shopping order, checking your CBSE exam scores, or comparing interest rates on a home loan, understanding percentages makes life easier.

But what is a percentage? How do you calculate it? You can do it manually with a simple formula or use our online percentage calculator to get results in seconds—perfect for when you need a quick answer without doing the maths! Read on to find out more in our detailed guide.

What is a Percentage?

A percentage expresses a number as a fraction of 100. It’s widely used to compare proportions, measure changes, and analyse statistics in fields like finance, retail, education, and health.

For example, if you score 85% in your CBSE Maths exam, it means you got 85 out of 100 marks correct.

How to Calculate a Percentage?

To calculate a percentage, use this simple formula:

Percentage = (Part ÷ Total) × 100

Percentage Calculator

If you have 10 biscuits and you eat 4, you can find out what percentage you ate by dividing the part (biscuits eaten) by the total (all biscuits): 

4 ÷ 10 = 0.40 and 0.40 x 100 = 40

So, you ate 40% of the biscuits.

How is a Percentage Used?

Percentages are part of everyday life, helping us understand proportions, compare values, and make smarter financial decisions. Here are some real-life examples of how percentages are used:

Shopping: Discounts & Sales

Imagine you find a pair of shoes on sale for 25% off its original price of ₹2,000 on an e-commerce site like Flipkart or Amazon. To find your savings:

• Multiply the discount percentage by the original price: 2000 × 0.25 = 500
• You save ₹500, and the new price is ₹1,500.

Sales and discounts use percentages to show how much you save at checkout.

Finance: Home Loans & Savings Rates

Percentages are essential in banking, especially when calculating interest rates on home loans or savings accounts.
For instance, if your bank offers 4% interest on a fixed deposit of ₹50,000:

• Multiply your balance by the interest rate: 50000 × 0.04 = 2000
• You earn ₹2,000 in interest per year.

A higher percentage means more earnings on your savings!

Health & Nutrition: Food Labels

When checking food labels, you might see “10% sugar” listed on a beverage bottle. This indicates that in every 100 ml of the drink, 10 ml is sugar.

For example

For example, if the bottle contains 1 litre (1000 ml) of juice:

• Multiply the total volume by 10% (0.10): 1000 × 0.10 = 100
• So, the bottle contains 100 ml of sugar.

Understanding percentages in nutrition can help you make healthier choices.

From calculating tips at restaurants to tracking sports statistics, percentages are everywhere!

How do I Calculate a Percentage Increase?

A percentage increase tells you how much something has grown compared to its original value. Use this formula:

Percentage Increase = ((New Value − Old Value) ÷ Old Value) × 100

How do I Calculate a Percentage Difference?

Your monthly electricity bill was ₹1,200 last month, but this month it’s ₹1,500.

• Difference: 1500−1200 = 300
• Divide by the original value: 300 ÷ 1200 = 0.25
• Multiply by 100: 0.25 × 100 = 25%

Your electricity bill increased by 25%.

How do I Calculate a Percentage Decrease?

A percentage decrease tells you how much something has reduced from its original value. Use this formula:

Percentage Decrease = ((Old Value − New Value) ÷ Old Value  ) × 100

How do I Calculate a Percentage Decrease?

A smartphone originally cost ₹15,000, but is now on sale for ₹12,000.

• Difference: 15000 − 12000 = 3000
• Divide by the original price: 3000 ÷ 15000 = 0.20
• Multiply by 100: 0.20 × 100 = 20%

The phone is now 20% cheaper.

How do I Calculate a Reverse Percentage?

A reverse percentage helps you find the original value before a percentage change.

Good to know

You bought a laptop for ₹45,000 after a 10% discount, and you want to know the original price.
Since ₹45,000 is 90% of the original price:

• Divide by 0.90: 45000 ÷ 0.90 = 50000

So, the original price before the discount was ₹50,000.

How to Convert a Percentage to a Grade

In India, percentages are often used to determine academic grades in board exams. For example, the CBSE grading system may use percentage ranges to assign grades.

If you score 85% in a subject, that might correspond to an A grade in your school report.

How to Calculate a GPA from a Percentage

While GPA is more common in international contexts, some Indian institutions convert percentages to a GPA scale for comparison with global standards.

For example

For example, if you have a university mark of 65%, it might be considered a First Division, roughly equivalent to a 3.5 GPA on the US scale.

Understanding percentages can simplify everyday decisions, from budgeting and shopping to tracking academic performance. Use our online percentage calculator for quick and accurate results whenever you need them!

CGPA to Percentage Calculator

Many universities and boards, such as CBSE, ICSE, and various Indian colleges, use CGPA (Cumulative Grade Point Average) instead of direct percentages. To convert CGPA into a percentage, use the standard formula:

Percentage = CGPA × 9.5

CGPA to Percentage Calculator

If your CGPA is 8.4, then: 8.4 × 9.5 = 79.8%

So, your percentage is 79.8%.

Use our percentage calculator for quick CGPA to Percentage conversions!

SGPA to Percentage Calculator

Many universities use SGPA (Semester Grade Point Average) instead of direct percentages. The formula to convert SGPA to percentage varies, but a common one is:

Percentage = (SGPA − 0.5) × 10 

For example

If your SGPA is 8.2, then: (8.2 − 0.5) × 10 = 77%

Use our Calculator to do your SGPA to Percentage conversion easily!

Marks Percentage Calculator

Want to find out your total percentage from your exam marks? Use this simple formula:

Marks Percentage = (Total Marks Obtained ÷ Maximum Marks) × 100

If you scored 450 marks out of 500, your percentage is: (450 ÷ 500) × 100 = 90%

Attendance Percentage Calculator

Want to check if you have enough attendance for exams? Use this formula:

Attendance Percentage = (Classes Attended ÷ Total Classes Conducted) × 100

If you attended 40 out of 50 classes, then your attendance percentage would be:

(40 ÷ 50) × 100 = 80%

So, your attendance percentage is 80%. 

10th Percentage Calculator

Want to calculate your Class 10th board exam percentage? Use this simple formula:

Marks Percentage = (Total Marks Obtained ÷ Maximum Marks) × 100

If your total marks in CBSE 10th Board are 450 out of 500, then your Marks Percentage will be:

(450 ÷ 500) × 100 = 90%

Use our Calculator to check your percentage marks instantly!

Body Fat Percentage Calculator: How do I Calculate my Body Fat Percentage?

Your body fat percentage is an important measure of fitness. It can be calculated using BMI, skinfold measurements, or a body fat scale.

A basic formula for body fat percentage using BMI is:

Body Fat Percentage = (1.20 × BMI) + (0.23 × Age) − (10.8 × Gender) − 5.4

Body Fat Percentage Calculator

For a 25-year-old male with a BMI of 24:
Body Fat Percentage = (1.20 × 24) + (0.23 × 25) − (10.8 × 1) − 5.4 = 18.2%

Percentage Difference Calculator: How do I Calculate a Percentage Difference?

Need to compare two numbers and find the percentage difference? Use this formula:

Percentage Difference = ((Value 1 - Value 2) ÷ ((Value 1 + Value 2) ÷ 2)) x 100

How to calculate percentage difference?

If one product costs ₹1,200 and another costs ₹1,500:

Percentage Difference = ((1200 - 1500) ÷ ((1200 + 1500) ÷ 2)) x 100 = 22.22%

Use our Calculator for quick comparisons!

Salary Percentage Calculator: How do I Calculate my Expenses?

Want to calculate how much of your salary goes into savings, rent, or expenses? Use this formula: Percentage Salary = (Category Amount ÷ Total Salary) × 100

How to calculate salary percentage?

If your rent is ₹15,000 and your salary is ₹50,000: (15000 ÷ 50000) × 100 = 30%

So, 30% of your salary goes to rent. 

Hike Percentage Calculator: How do I Calculate my Salary Hike?

Did you get a salary hike and want to know how much it increased? Use this formula:

Hike Percentage = ((New Salary − Old Salary) ÷ Old Salary) × 100

If your salary increased from ₹50,000 to ₹60,000, then: ((60000 − 50000) ÷ 50000) × 100 = 20%

So, your salary hike percentage is 20%. 

FLAMES Percentage Calculator: How do you calculate your FLAMES Percentage?

We’ve all played the FLAMES game back in school and college, giggling with friends while checking our "compatibility" with a crush or best friend. Whether it was scribbling names in the back of a notebook or using online tools, FLAMES has always been a fun way to see where a relationship might be headed!

FLAMES stands for Friendship, Love, Affection, Marriage, Enemy, and Sibling. The game removes matching letters from two names and calculates a score based on the remaining letters. The final result gives a percentage of compatibility between the two names.

If "Rahul" and "Priya" have 7 remaining letters, their FLAMES percentage might be 70% compatible.

Of course, it’s all just for fun—so don’t take it too seriously!

FLAMES calculator

If you're new to this, here's how to make your own FLAMES calculator:

• Write down both names (e.g., Rahul & Priya).
• Remove all common letters (e.g., R, A, and I appear in both, so remove them).
• Count the remaining letters (e.g., 7 letters left).
• Use the count to cycle through FLAMES (F-L-A-M-E-S, removing one letter per count until you land on the final letter).
• The last letter determines your relationship result!

Nishadh Mohammed

Nishadh Mohammed is a seasoned news editor and financial writer, working with HelloSafe since May 2023. Nishadh has developed expertise in financial markets, insurance, and investment products, with a deep understanding of the Canadian financial landscape. He has honed his SEO skills and content marketing strategies while writing for Canadian publishing houses. Armed with a master's in Business Analytics and extensive journalistic experience, Nishadh uniquely combines data proficiency and thorough research to deliver comprehensive and accessible information.