Work out tips, discounts, grades, taxes and percentage change in seconds. Pick a mode below and enter your numbers.
To find X% of a number Y, multiply Y by X and divide by 100 (Y × X ÷ 100). To find what percentage one number is of another, divide the first number by the second and multiply by 100. To find percentage change between two values, subtract the original from the new value, divide by the original, then multiply by 100 — a positive result is an increase, a negative result is a decrease.
How do I calculate a tip using this tool?
Use "X% of Y" mode — enter your tip percentage (e.g. 18) and your bill total as Y. The result is your tip amount; add it to your bill for the total.
What's the difference between percentage change and percentage points?
Percentage change is a relative change (e.g. going from 50 to 75 is a 50% increase). Percentage points measure the raw difference between two percentages (e.g. going from 50% to 55% is a 5 percentage point increase, but a 10% relative increase).