Percent Calculator

Calculate percentages online. Find X% of Y, add or subtract percentages, calculate percentage change.

Popular calculations

10% of 100 = 10.00 20% of 100 = 20.00 25% of 100 = 25.00 50% of 100 = 50.00 15% of 200 = 30.00 30% of 500 = 150.00

How to use

Select the operation type, enter the values and click Calculate. The result will include a step-by-step solution.

Formulas

  • What is X% of Y?: result = (percent / 100) × value
  • Add X% to Y: result = value × (1 + percent / 100)
  • Subtract X% from Y: result = value × (1 - percent / 100)
  • What percent is X of Y?: result = (X / Y) × 100%
  • Percentage change from X to Y: result = ((new - old) / old) × 100%