Percentage means 'out of 100' ...you have taken away 3 items out of 17. Percentage tells you how many would you have taken out had the total items been 100.
Out of 17 --- Taken out 3
Out of 100 ---- how much??
100 x 3 / 17 = 17.64 %
You can get the most easy and the simplest way to calculate percentage through this Final GPA Calculator is to divide the given amount by the total amount and then multiplying the answer by 100 to get the percentage of the given amount with respect to the total amount.
The equation can be put up as follows:
(Given amount/ Total amount) x100
Hope that helped !