Toolbench / Everyday / Percentage Calculator
Percentage Calculator
Three quick modes: a percent of a number, one number as a percent of another, and percent change.
What is X% of Y?
X is what percent of Y?
Percent change from X to Y
About the percentage calculator
Percentages express a part out of one hundred. The three calculations here cover almost every everyday need: finding a percentage of a number (tips, tax, discounts), expressing one figure as a percentage of another (scores, shares), and measuring change between two figures (growth, markdowns).
For a discount, use the first mode: 15% of 200 is 30, so the sale price is 170. For growth, use the third mode: going from 80 to 100 is a 25% increase.
All three run instantly on your device, with no rounding surprises beyond two decimal places for readability.