Percentage math explained clearly — formulas, examples, and shortcuts.
Five real-life scenarios where percentage math actually matters — restaurants, checkout, pay stubs, discounts — with a worked example and a quick mental math shortcut for each.
Most percentage mistakes aren't about the formula — they're about which formula to use. We mapped 35 real-world scenarios to the right calculation type: percentage of, percentage change, markup vs discount, tip, GPA. The examples use specific numbers, not variables.
Six percentage formulas, when to use each, and worked examples for tips, discounts, percentage change, and more. The only percentage guide you need to bookmark.