Percentage Calculator
Solve the three everyday percent questions — X% of Y, X as a percent of Y, and percent change — side by side with live results.
Processed locally in your browser — nothing is uploaded.
What is X% of Y?
Result
X is what percent of Y?
Result
Percent change from X to Y
Result
About Percentage Calculator
Percent problems come in three flavors that people constantly mix up: taking a percent of a number, expressing one number as a percent of another, and measuring how much something grew or shrank. This page keeps all three solvers visible at once, so you pick the row that matches your question and type straight into it.
Results update as you type, with increases and decreases clearly signed so a price drop never reads like a gain.
Common uses
- Figure a 15% deposit on a purchase
- Check what fraction of a budget has been spent
- Measure the percent change between last month's and this month's numbers
- Sanity-check a discount or markup someone quoted you
Example
Input
% change from 50 to 75
Output
+50%