Three calculators in one — find percentages, percentage change, and more instantly.
A percentage is a number expressed as a fraction of 100. To find X% of Y: multiply Y by X and divide by 100. For example, 25% of 200 = (200 × 25) ÷ 100 = 50.
Percentage change is calculated as: ((new − old) ÷ old) × 100. Positive = increase, negative = decrease.