Percentage Calculator
Five types of percentage calculations. Each card is independent — just fill in the numbers.
Percentage of a Number
Find X% of a given value. Use for calculating discounts, tax amounts, or tips.
e.g. 20% of 150 = 30
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30What Percent is X of Y?
Determine what percentage one number is of another. Useful for scores, ratios, and proportions.
e.g. 30 out of 200 = 15%
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15%Percentage Change
Calculate the % increase or decrease between two values. Use for growth rates, price changes, or trends.
e.g. 100 → 125 = +25% increase
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+25%Increase a Value by %
Add a percentage on top of a number. Common for markup pricing, salary hikes, or growth projections.
e.g. 200 + 15% = 230
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230Decrease a Value by %
Subtract a percentage from a number. Ideal for discounts, depreciation, or cost reductions.
e.g. 200 − 15% = 170
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Result
170