Percentage = (Grade ÷ Maximum Grade) × 100
If the grade is already out of 100, the percentage is the same as the grade
If the grade is a letter grade, convert it using the school’s grading scale
If the grade is a GPA or CGPA, convert it using the institution’s conversion formula
If the grade is a fraction, divide the obtained marks by the total marks and multiply by 100
If the grade is a ratio, convert it to a fraction first, then multiply by 100
If the grade is on a different scale, use: Percentage = (Obtained Score ÷ Total Possible Score) × 100