Percentage of marks = (Obtained marks ÷ Total marks) × 100
Example: If you scored 450 out of 500
Percentage = (450 ÷ 500) × 100
Percentage = 90%
If there are multiple subjects, add all obtained marks first
Add all total marks first
Then use the same formula
Percentage of marks = (Total obtained marks ÷ Total maximum marks) × 100