Calculate the percentage increase or decrease between two numbers. Percentage Difference Calculator is a simple free online tool to find out the difference in percentage between any two numbers Calculating the percent difference between two given values is quite an easy task. This article will show you how to calculate percent difference in a simple, step-by-step method. The percentage difference calculator is here to help you compare two numbers. Here we will show you how to calculate the percentage difference between two numbers and, hopefully, to properly explain what the percentage difference is as well as some common mistakes. In the following article, we will also show you the percentage difference formula. Without data percentage change figures can be misleading. Ceredigion, a county in West Wales has a very low violent crime rate. Police reports for Ceredigion in 2011 showed a 100% increase in violent crime. This is a startling number, especially for those living or thinking about moving to Ceredigion. Calculator Use. The Percentage Difference Calculator (% difference calculator) will find the percent difference between two positive numbers greater than 0. Percentage difference is usually calculated when you want to know the difference in percentage between two numbers. Percentage Difference is used when both values mean the same kind of thing (for example the heights of two people). But if there is an old value and a new value, we should use Percentage Change Or if there is an approximate value and an exact value, we should use Percentage Error Percentages are a useful way of comparing how one part of something measures against the whole. But with a few extra calculations, you can also use percentages to compare the difference between any two items that are related. Calculate percentages. Excel for Office 365 Excel for Office 365 for Mac Excel for the web Excel 2019 Excel 2016 Excel 2019 for Mac Excel 2013 Excel 2010 Excel 2007 Excel 2016 for Mac Excel for Mac 2011 More. Less. Sometimes percentages can be frustrating because it’s not always easy to remember what we learned about them in school. Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. Percentage Calculator. Use this versatile percentage calculator to easily calculate the percentage difference between two numbers, to calculate percent change (percentage increase, percentage decrease), to find out what % is a given number from any other given number, as well as how much is x percent of y.