If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. How to Calculate Percentages. Knowing how to calculate percentages will help you not only score well on a math test but in the real world as well. They are used for calculating tips in restaurants, finding out the nutritional content of. Whether you're shopping for deals, need help with a little math, or any number of other occasions, it's a valuable skill to know how to quickly figure out a percentage given two numbers. Let's say you're shopping and you come across a pair of shoes that are normally $45, but now they're on sale for $36. To figure out just how much of the original price you're paying, you just need some quick math. Find percentage - Calculate the increase/decrease in percent. Calculation of percentage is an interesting part in the world of mathematics and obvious in every math classes. The percentage converter helps you with percent increase, decrease, differences, calculation and to figure out percentage. This feature is not available right now. Please try again later. This free percentage calculator computes a number of values involving percentages, including the percentage difference between two given values. Explore various other math calculators as well as hundreds of calculators addressing finance, health, fitness and more. What is the percentage? - How to find the percentage of something? Percentage is one of many ways to express a dimensionless ratio of two numbers. It's very popular since it can describe situations that involve large numbers (e.g., estimating chances for winning the lottery), average (e.g., determining final grade of your course) as well as very small ones (like volumetric proportion of NO₂. Find a percent of a quantity as a rate per 100; solve problems involving finding the whole, given a part and the percent. In mathematics, a percentage (from Latin per centum by a hundred ) is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, % , or the abbreviations pct. , pct ; sometimes the abbreviation pc is also used. A percentage is a dimensionless number (pure number). Tips: Use tab to move to the next field. Use shift-tab to move to the previous field. Press enter to calculate.