# How to Calculate the Percentage of a Grade ••• Singkham/iStock/GettyImages

## Points System

Calculate the percentage you earned on one specific grade. To do this, take the total number of points you earned on the assignment and divide by the number of points the assignment was worth. If, for example, you earned 38 points out of a total possible 50 points, then your percentage is 76, as shown here: 38 / 50 = .76 or 76 percent. This is generally considered to be a "C" grade on a standard grading scale.

Determine the percentage of a class grade for one specific assignment. For this, you will need to take the possible points for every assignment in the class and add them together, and then divide the possible points for the specific assignment in question by the possible points for the course. If, for instance, a course has a total of 1,000 possible points and yesterday's test was worth 200 points, then you would divide 200 by 1000. That means that yesterday's test would be worth 20 percent of your overall grade in the course.

Find your overall grade in the class. Take the number of points you have earned on every assignment and add them together. Then divide this number by the number of possible points in the entire course. So if, for instance, you have earned 850 points total in a class where there were 1,000 possible points, your grade percentage in that class is 85. This is considered a "B" grade on an average grade scale.