Percentage Calculator
Calculate percentages instantly. Find percentage of a number, percentage change, increase, decrease, and more.
Percentage Calculator
Calculate percentages, find what percent one number is of another, or compute percentage change.
What is X% of Y?
Enter a percentage and a number to find the result.
Common Percentages Quick Reference
10%
= 1/10
12.5%
= 1/8
20%
= 1/5
25%
= 1/4
33.3%
= 1/3
50%
= 1/2
66.7%
= 2/3
75%
= 3/4
Result
--
Formula
Result = (X / 100) × Y
Multiply the percentage by the number, then divide by 100.
How to Calculate Percentages
A percentage is a way to express a number as a fraction of 100. The word “percent” literally means “per hundred.” This calculator covers the three most common percentage calculations you'll encounter in everyday life, school, and work.
Finding X% of a Number
To find X% of Y, multiply Y by X and divide by 100. For example, 25% of 200 is (25 × 200) / 100 = 50. This is useful for calculating discounts, tips, tax amounts, and more.
Finding What Percent X is of Y
To determine what percentage X is of Y, divide X by Y and multiply by 100. For example, 50 is (50 / 200) × 100 = 25% of 200. This helps with grading, performance metrics, and comparisons.
Calculating Percentage Change
Percentage change measures how much a value has increased or decreased relative to its original value. The formula is ((New Value - Old Value) / |Old Value|) × 100. A positive result indicates an increase, while a negative result indicates a decrease. This is commonly used in finance, economics, and data analysis.
How to Use
- 1Choose the type of percentage calculation you need (percentage of a number, percentage change, etc.).
- 2Enter the required values in the input fields.
- 3View the calculated percentage result instantly.