What is X% of Y?
Calculate the percentage of a number
X is what % of Y?
Find what percentage one number is of another
Percentage Change
Calculate increase or decrease between values
Increase by X%
Add a percentage to a value
Decrease by X%
Subtract a percentage from a value
Discount Calculator
Calculate final price after discount
Instant Results
Accurate calculations with detailed breakdowns
6 Calculators
Every percentage need in one place
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Complete Guide to Percentage Calculations
Percentages are used daily in finance, shopping, statistics, and countless other applications. Our 6-in-1 percentage calculator handles every type of percentage calculation quickly and accurately.
What is X% of Y?
Multiply Y by X and divide by 100. Use this for tips, taxes, and discounts.
X is what % of Y?
Divide X by Y and multiply by 100. Use this for grades and data analysis.
Percentage Change
((New - Original) รท Original) ร 100. Positive = increase, negative = decrease.
Increase/Decrease by %
Increase: Original ร (1 + %/100). Decrease: Original ร (1 - %/100).
Common Uses
- Shopping โ Calculate discounts and final prices
- Finance โ Understand interest rates and investment returns
- Business โ Analyze profit margins and sales growth
- Education โ Convert test scores to percentages
Frequently Asked Questions
Multiply Y by X and divide by 100. Example: 25% of 200 = (25 ร 200) รท 100 = 50.
Percentage change = ((New Value - Original Value) / Original Value) ร 100. Positive = increase, negative = decrease.
Percentage increase specifically refers to when the new value is higher than the original. Percentage change can be positive (increase) or negative (decrease).
Final price = Original price ร (1 - discount% / 100). Use our Discount Calculator above for instant results with full breakdown.
Yes, all 6 calculators are 100% free with no registration, no limits, and no data stored.