Percentage Calculator
Calculate percentages, changes, and proportions — in real-time.
X% of Y
What is X% of Y?
Enter both values above to see the result in real-time
Quick Examples
15% of 20030
45 is ?% of 18025%
100 → 150 change+50%
250 + 20%300
Calculate percentages in multiple ways: find X% of a number, determine what percentage one number is of another, calculate percentage increase or decrease between two values, and more. Solve any percentage problem with clear step-by-step explanations.
Key Features
- ✓Calculate X% of Y
- ✓Find what percent X is of Y
- ✓Percentage increase/decrease between two values
- ✓Step-by-step calculation explanation
- ✓Multiple calculation modes
How to Percentage Calculator
- 1
Choose calculation type
Select the type of percentage calculation you need.
- 2
Enter values
Input the numbers for your calculation.
- 3
See result
View the answer with a step-by-step explanation.
Common Use Cases
- •Calculating tips and discounts while shopping
- •Finding grade percentages for school
- •Computing profit margins and markups
- •Determining price increases or decreases
Frequently Asked Questions
How do I calculate percentage increase?▼
Percentage increase = ((New Value - Old Value) / Old Value) × 100. For example, from 50 to 75: ((75-50)/50) × 100 = 50% increase.