Percentage Calculator
Use this percentage calculator to find a percent of a number, work out what percentage one value is of another, or calculate percentage increase and decrease. Enter your values, choose the mode, and get an instant answer.
| Mode | Formula | Example |
|---|---|---|
| What is X% of Y? | (X / 100) × Y | 15% of 200 = 30 |
| X is what % of Y? | (X / Y) × 100 | 30 is 15% of 200 |
| Percentage change | ((new - old) / old) × 100 | 100 to 120 = 20% increase |
Tip: For percentage change, a positive result means an increase, while a negative result means a decrease.
Disclaimer: Results are for general informational purposes. Always double-check critical calculations.