Percentage Calculator
Calculate percentages, percentage changes, and percentage of values
01000
11000
Percentage Formulas
1. What is X% of Y?
Formula: (X ÷ 100) × Y
Example: What is 25% of 200? = (25 ÷ 100) × 200 = 50
2. X is what % of Y?
Formula: (X ÷ Y) × 100
Example: 50 is what % of 200? = (50 ÷ 200) × 100 = 25%
3. Percentage Change
Formula: ((New - Old) ÷ Old) × 100
Example: Change from 50 to 75? = ((75 - 50) ÷ 50) × 100 = 50% increase
Common Uses
- Calculate discounts and sales prices
- Find tax amounts and tips
- Track percentage growth or decline
- Compare values as percentages
- Calculate grade percentages
?
Guide
How it works
This calculator helps you solve three common percentage problems:
- What is X% of Y? - Finds a percentage of a number
- X is what % of Y? - Finds what percentage one number is of another
- Percentage change from X to Y - Calculates increase or decrease
How do you calculate percentage?
To find what percent X is of Y, divide X by Y and multiply by 100. For example, 25 is 50% of 50 because (25 ÷ 50) × 100 = 50%.
What is percentage increase?
Percentage increase is calculated as ((New Value - Old Value) / Old Value) × 100. For example, increasing from 50 to 75 is a 50% increase.
Next steps