Math
Percentage Calculator
Solve any percentage problem in seconds — find what a percentage of a number is, what percent one number is of another, or the percentage increase or decrease between two values.
15% of 200 is
30
How to Use the Percentage Calculator
- 1Choose the tab that matches your problem: X% of Y, X is what % of Y, or percentage increase/decrease.
- 2Enter your numbers into the fields.
- 3The result updates instantly with a clear, labeled answer.
Percentage Formulas Used
- X% of Y: (X ÷ 100) × Y
- X is what % of Y: (X ÷ Y) × 100
- Percentage change: ((New − Old) ÷ |Old|) × 100