Calculate percentage increases, decreases, fractions, and proportions.
How to Use Percentage Calculator
Pick the calculation mode you need: "X% of Y", "X is what % of Y", or "percentage change from X to Y".
Enter your numbers into the fields.
The result updates instantly as you type.
Key Features & Practical Use Cases
Calculating final retail prices after applying discount percentage values.
Estimating investment profit increases or percentage yield variances.
Computing weight ratios, markups, or tip percentages during calculations.
Frequently Asked Questions
What percentage calculations does this cover?
The common modes: finding a percentage of a number, finding what percent one number is of another, and calculating percentage increase/decrease between two values.
Can it handle negative percentage changes (decreases)?
Yes - the percentage-change mode correctly shows a negative result when the second value is lower than the first, representing a decrease.
Does it round the result, or show full decimal precision?
Results are shown with reasonable decimal precision for practical use (like pricing calculations); extremely long repeating decimals are rounded for readability.
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