The formula for percent error is. The formula for the mean percentage error is. Percent Error Formula Percent error is the difference between a measured or experiment value and an accepted or known value divided by the known value multiplied by 100.
PE Estimated value-Actual value Actual value 100.
Absolute Difference Accepted value Experimental value Percentage Error fracAbsolute Difference Accepted Valuetimes 100. PE Estimated value-Actual value Actual value 100. Percentage Error Approximate Value Exact Value Exact Value 100 Solved Example Example 1. Percent error also percentage error is a measure of the accuracy of a measurement relative to a true or estimated value sometimes referred as theoretical value.