Percentage Calculator
Calculate what X% of Y is, what percentage X is of Y, and the percentage change between two values.
Mode
How to use the percentage calculator
- 1. Choose a calculation mode.
- 2. Enter the two values (X and Y).
- 3. Click Calculate to see the result.
FAQ
What is X% of Y?
Multiply Y by X and divide by 100. For example, 20% of 150 = (20 / 100) × 150 = 30.
How do I find what percentage X is of Y?
Divide X by Y and multiply by 100. For example, 30 is what percent of 150? (30 / 150) × 100 = 20%.
How is percentage change calculated?
Percentage change = ((New Value − Old Value) / |Old Value|) × 100. A positive result is an increase; a negative result is a decrease.