Percentage Calculator
Pick the question you're asking. The answer updates as you type and the working is shown below.
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How it's calculated
- X% of Y = (X ÷ 100) × Y
- X as % of Y = (X ÷ Y) × 100
- % change = (new − old) ÷ |old| × 100
- % difference = |X − Y| ÷ ((X + Y) ÷ 2) × 100
Worked example
15% of 240 is 36.
Load this example into the calculatorAssumptions and limits
- % change uses the absolute value of the starting number so a move from −50 to −25 reads as an increase.
Common questions
Is a 50% increase followed by a 50% decrease back to the start?
No. 100 → 150 is +50%, but 150 → 75 is −50%. Each percentage is taken of a different base.
What's the difference between percentage change and percentage points?
Going from 4% to 5% is a change of 1 percentage point, but a 25% relative increase.