How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

Learn how to quickly calculate a percent of any number in Excel using simple formulas that save time and reduce errors.

Percentage Formula: Percentages are a fundamental concept in maths, used frequently in daily life. It represents parts of a whole as fractions of 100. They're symbolised by the "%" symbol.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Understanding the profit you can make selling products is the first step in analyzing the potential of the market for those products. Profit margin can be expressed as a dollar figure or as a ...

Have you ever looked at your test scores or a report card and wondered, “What does it mean to be in the 90th percentile?” Or maybe you've calculated the percentages. of a discount you’re getting on a ...

Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Long time math fans may remember our first foray into the world ...