Percentage Calculator
What is % of ?
is what percent of ?
How to use this calculator
This tool covers the three percentage questions people search for most: finding a percentage of a number, figuring out what percentage one number is of another, and calculating the percentage change between two values (like a price increase or a discount).
For percentage change, a positive result means an increase and a negative result means a decrease — useful for tracking things like salary raises, weight changes, or price markdowns.
The formulas used
X% of Y = (X ÷ 100) × Y. What percent is X of Y = (X ÷ Y) × 100. Percentage change = ((New − Old) ÷ Old) × 100.