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Percentage Calculator

Processed in your browser

Use a dot for decimals. Results update as you type and display up to 12 significant digits.

Result-

Enter both values to see your result.

Using Percentage Calculator

Choose a calculation and enter two numbers. Percentage change uses (new − original) ÷ original × 100 and requires a positive original value. Discounts range from 0 to 100%. Results display up to 12 significant digits; copying retains JavaScript number precision. All calculations run locally in your browser.