What is
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is what % of
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Difference between
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How to calculate percentages
What is X% of Y? Multiply Y by X and divide by 100. Example: 25% of 200 = 200 × 25 ÷ 100 = 50.
X is what % of Y? Divide X by Y and multiply by 100. Example: 50 is what % of 200? = (50 ÷ 200) × 100 = 25%.
Percentage increase/decrease: ((New − Old) ÷ Old) × 100. A positive result means increase, negative means decrease.
Percentage difference: |A − B| ÷ ((A + B) ÷ 2) × 100. Used to compare two values without a fixed reference point.
Frequently asked questions
How do I calculate a percentage on a calculator?
Multiply the number by the percentage and divide by 100. For example, 15% of 80 = 80 × 15 ÷ 100 = 12. Or use the % button on most calculators: type 80 × 15 % =.
What is 20% of 100?
20% of 100 is 20. You can verify: 100 × 20 ÷ 100 = 20.
How do I find what percentage one number is of another?
Divide the first number by the second, then multiply by 100. For example, 30 is what percent of 120? 30 ÷ 120 × 100 = 25%.