Arithmetic

Percentage Calculator

Solve percent-of, what-percent, and percent-change questions without rebuilding the formula each time.

Preparing Percentage Calculator

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Input

Choose the percent question type, enter the known values, and calculate the answer without rebuilding the percent formula manually. You will see the result first and the step-by-step solution below.

Input summary

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Step by Step Calculation

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Calculate first and the full working will appear below automatically.

How to use Percentage Calculator

Pick the percent task that matches your question, enter the known numbers, and the calculator will return the value, share, or percent change immediately.

What this calculator is for

This calculator is for discounts, markups, test scores, budget comparisons, and any percent problem that asks for a part, a whole, or the change between two amounts.

Tips

Match the mode to the wording of the question before typing the numbers.
Use the original value, not the new value, as the base when checking percent change.
For reverse-style questions, read carefully which number is the part and which is the whole.