Percentage calculation method will show the cumulative grade unchanged if the grade received on the assignment is at max points, when a lower grade is received, this will reduce the cumulative amount.

For example: If an assignment type is set to calculate 50% of the grade, when an assignment has max points of 25 and max points are added to the grade book, the grade is not calculated into the cumulative average because ti's already included in the cumulative calculation at 50% of the total. If the points earned for the assignment is lower, it will reduce or the cumulative.

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