Percentage Calculator
Calculate percentages, percentage increases, decreases, and solve common percentage problems instantly.
What is X% of Y?
Calculate a percentage of a number
X is what % of Y?
Find what percentage one number is of another
Percentage Change
Calculate percentage increase or decrease
Add/Subtract Percentage
Add or subtract a percentage from a number
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About Percentage Calculator
Our percentage calculator helps you solve common percentage problems quickly and accurately. Whether you're calculating discounts, tips, tax, or analyzing data, our tool makes percentage calculations simple and straightforward.
Common Percentage Calculations
- Percentage of a Number: Find what 25% of 200 is (useful for discounts, tips)
- What Percentage: Find what percentage 50 is of 200 (useful for test scores, completion rates)
- Percentage Change: Calculate increase or decrease between two values (useful for growth rates, price changes)
- Add/Subtract Percentage: Add or remove a percentage from a number (useful for tax, markup)
Real-World Examples
- Shopping: Calculate 20% off a $100 item = $80
- Tipping: Calculate 15% tip on a $50 meal = $7.50
- Sales Tax: Add 8% tax to $100 = $108
- Test Scores: 45 out of 50 questions = 90%
- Salary Increase: 5% raise on $50,000 = $52,500
Percentage Formulas
- Percentage of a number: (Percentage ÷ 100) × Number
- What percentage: (Part ÷ Whole) × 100
- Percentage change: ((New - Old) ÷ Old) × 100
- Add percentage: Number × (1 + Percentage ÷ 100)
- Subtract percentage: Number × (1 - Percentage ÷ 100)
Tips for Using Percentages
- Always identify what the "whole" or base number is
- Remember that percentage means "per hundred"
- Use percentage change to compare growth or decline
- Double-check your calculations for important financial decisions
- Understand the difference between percentage points and percentages
Why Use Our Calculator?
- Instant, accurate calculations
- Multiple calculation types in one place
- Clear, easy-to-understand results
- No registration or download required
- Works on all devices
- 100% free to use