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Percentage Change • Discounts • Markup • Tax
This tool covers five of the most common everyday percentage calculations: finding what a percentage of a number is, working out how much a value has increased or decreased in percentage terms, calculating a shopping discount and how much you save, working out a selling price from a cost and a target markup, and adding or extracting tax from a price. Switch between modes with the buttons above, and the result updates instantly as you type. All calculations happen locally in your browser.