Calculators
Percentage Calculator

Three types of percentage calculations:

1. What is X% of Y? → (X / 100) × Y

2. X is what % of Y? → (X / Y) × 100

3. % Change from X to Y → ((Y − X) / X) × 100

What is X% of Y?
X is what % of Y?
% Change from X to Y

Percentage Calculator

Our free Percentage Calculator handles the three most common percentage problems: finding a percentage of a number, finding what percentage one number is of another, and calculating the percentage increase or decrease between two values.

Types of Percentage Calculations

  • X% of Y — e.g. What is 15% of 200? → 30
  • X is what % of Y — e.g. 30 is what % of 200? → 15%
  • % change from X to Y — e.g. 200 to 250 → 25% increase

Frequently Asked Questions

How do I calculate percentage increase?
Percentage increase = ((New Value − Old Value) / Old Value) × 100. Use the "% Change" section above.
Is this calculator free?
Yes, completely free and works instantly.