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Percentage Calculator
Calculate percentages, percentage change, and what percent one number is of another.
What is 15% of 200?
%
30 is what % of 200?
Percentage Change
📐Percentage Formulas Explained
- 1X% of Y: Multiply Y by (X ÷ 100). Example: 15% of 200 = 200 × 0.15 = 30.
- 2X is what % of Y: Divide X by Y and multiply by 100. Example: 30 ÷ 200 × 100 = 15%.
- 3Percentage change: (New − Old) ÷ Old × 100. Positive = increase, negative = decrease.
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