Percentage Calculator
Percent of, change and marks %.
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What is X% of Y?
X is what % of Y?
Percentage increase or decrease
Marks percentage
CGPA to percentage (× 9.5)
How to use Percentage Calculator
- 1Pick the calculator that matches your question.
- 2Type the two numbers. The answer updates as you type.
- 3Use the marks calculator for exam percentages.
Every percentage question in one place
Discounts, marks, salary hikes, price changes and tax all come down to a handful of percentage formulas. Each box here answers one common question, and shows the result with the working so you can check it.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 2,400 is 2,400 × 15 ÷ 100 = 360.
How do I find percentage increase or decrease?
Subtract the old value from the new value, divide by the old value and multiply by 100. From 80 to 100 is (100 − 80) ÷ 80 × 100 = 25% increase.
How do I calculate marks percentage?
Divide the marks you scored by the total marks and multiply by 100. 432 out of 500 is 86.4%.
How do I convert CGPA to percentage?
Many boards, including CBSE for older results, use CGPA × 9.5. Check your board or university, as some use different formulas.