- Select the calculation mode you need (What Percent, Percent Of, or Percent Change)
- Enter the values in the corresponding fields
- Click 'Calculate' to see instant results
- Use the Reset button to clear all values and start over
How do I calculate what percent one number is of another?
To calculate what percent X is of Y, divide X by Y and multiply by 100. For example, to find what percent 25 is of 200: (25 ÷ 200) × 100 = 12.5%. Use our 'What Percent' mode for this calculation.
How do I calculate a percentage of a number?
To calculate Y% of X, multiply X by Y and divide by 100. For example, to find 15% of 80: (80 × 15) ÷ 100 = 12. Use our 'Percent Of' mode for this calculation.
How do I calculate percentage change?
To calculate the value after a percentage change, multiply the original value by the percentage, then add or subtract from the original. For example, 100 increased by 20%: 100 + (100 × 20%) = 120.
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