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Calculate Percentage Of
Find what is X% of Y
Example: 25% off a $200 item
The base number to calculate from
How to Use the Percentage Calculator
Calculate X% of Y
Find what amount represents a percentage of a number. Example: 25% of 200 = 50
Formula: (X ÷ 100) × Y
Percentage Change
Calculate increase or decrease between two values. Example: 100 to 120 = 20% increase
Formula: ((New - Old) ÷ Old) × 100
What Percentage
Find what percentage one number is of another. Example: 30 is 15% of 200
Formula: (Part ÷ Whole) × 100
Add/Subtract Percentage
Add or subtract a percentage from a number. Example: 100 + 20% = 120
Formula: Number ± (Number × Percentage ÷ 100)
Common Percentage Calculations
Shopping & Discounts
- • Calculate sale prices
- • Find savings amount
- • Compare discount offers
- • Calculate tax amounts
Finance & Business
- • Calculate tips and gratuity
- • Find interest rates
- • Track percentage growth
- • Analyze profit margins
School & Statistics
- • Grade calculations
- • Test score analysis
- • Statistical comparisons
- • Data analysis tasks
Frequently Asked Questions
What's the difference between percentage change and percentage difference?
Percentage change compares to the original value, while percentage difference compares to the average of both values. Use change for growth/decline analysis, difference for comparing similar values.
How do I calculate a percentage increase?
Subtract the original value from the new value, divide by the original value, then multiply by 100. Example: (120-100)÷100×100 = 20% increase.
Can percentages be greater than 100%?
Yes! Percentages over 100% indicate values greater than the whole. For example, a 150% increase means the new value is 2.5 times the original.
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Complete Guide to Percentage Calculator
Calculate percentages, percentage change, and percentage of numbers
Quick Answers
What is percentage calculator?
Why use our percentage calculator?
Free, accurate, instant results with no registration required. Mobile-optimized, secure, and designed by experts with 10+ years of experience in math calculations.
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