Percentage Calculator
Percent of, percent change & more.
Result
50
Optional: sends these inputs and this result to AI. Avoid confidential or sensitive information.
About Percentage Calculator
A percentage expresses a part of a whole as a fraction of one hundred. The same idea appears as 'percent of a number', 'what percent one value is of another', and 'percentage change' between two values.
Important considerations
Percentage change is sensitive to which value is treated as the starting point. Double-check the direction of a change before quoting it.
Want to understand the math?
Read our plain-language guide: How to Calculate Percentages (With Worked Examples)