TOOLS2030 / CALCULATORS / PERCENTAGE CALCULATOR

Percentage Calculator

Quickly calculate percentages, find what percentage one number is of another, and work out percentage increases or decreases.

What is X% of Y?

Example: What is 15% of 200?

0Result

X is what % of Y?

Example: 30 is what percent of 120?

0%Percentage

Percentage Increase / Decrease

Compare an old value with a new value to see the percentage change.

Auto detect
0%Change
Formula: ((new − old) ÷ old) × 100

How to calculate a percentage

  • X% of Y: multiply Y by X ÷ 100.
  • X is what % of Y: divide X by Y and multiply by 100.
  • Percentage change: divide the difference by the original value, then multiply by 100.

Useful for

Discounts, price changes, exam scores, business growth, commissions, taxes, budgeting and everyday calculations.

Privacy: Calculations happen entirely in your browser.