It is very easy to calculating percentage without the help of Internet. You should have to know correct theory and your assignments marks of your respected semester. The total marks of theory and assignment is 100 which has the ratio of 30:70. Now, let’s see how you can calculate percentage: First of all student have to collect marks of both “Assignment and theory”. Now after that you have to draw table and has to fill marks of each subject in it. The theory total marks is 70% and assignment total marks is 30%. Now, add 70% of theory marks of the programme and 30% of assignment marks to get the aggregation. Now, sum the entire total to get grand total of the subjects.