Percentage Calculator
Calculate percentages instantly — find what percent one number is of another, calculate percentage increase or decrease, and more. Free, fast, no sign-up needed.
What is X% of Y? Basic
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X is what percent of Y? Ratio
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Percentage Increase / Decrease Change
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Percentage Difference Compare
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How to Calculate Percentages
What is X% of a number?
To find X% of a number, multiply the number by X and divide by 100. For example, 20% of 500 = (500 × 20) ÷ 100 = 100.
How do I find what percentage one number is of another?
Divide the first number by the second, then multiply by 100. Example: 45 is what % of 200? = (45 ÷ 200) × 100 = 22.5%.
How to calculate percentage increase?
Formula: ((New Value − Old Value) ÷ Old Value) × 100. Example: from 80 to 100 = ((100 − 80) ÷ 80) × 100 = 25% increase.
What is percentage difference?
Percentage difference compares two values without direction. Formula: (|V1 − V2| ÷ ((V1 + V2) ÷ 2)) × 100.
