Percentage calculator
Free · No signup · Updated November 2026 by the DrapifyApp team
How do I calculate a percentage?
To find X% of a number, multiply the number by X and divide by 100: 18% of 1,200 is 216. To find what percent A is of B, divide A by B and multiply by 100: 300 of 1,200 is 25%. Percentage change is (new − old) ÷ old × 100: from 800 to 1,000 is a 25% increase.
216
25%
+25%
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How to use it
- Use the first row to find a percentage of a number.
- Use the second to find what percent one number is of another.
- Use the third for percentage increase or decrease.
Percentage points
A margin going from 20% to 25% is a rise of 5 percentage points, but a 25% increase in the margin itself. Say which one you mean in reports.
For sellers
Percentages drive fees, GST, discounts and margins. The discount, GST and margin calculators handle those specific cases with the right formulas.
Questions
- How do I calculate 18% of a number?
- Multiply by 0.18. 18% of ₹1,200 is ₹216.
- How do I calculate percentage increase?
- (New − old) ÷ old × 100.
- How do I reverse a percentage?
- To find the original before a 20% increase, divide by 1.2.