How do you calculate percentage of marks on a calculator?

To do this, divide the number of marks by the total number of marks possible. For example, if you have 80 out of 100 marks, your fraction would be 80/100. You can then convert this to a percentage by multiplying by 100. In this example, 80/100 would become 0.8 x 100, which is equal to 80%.

For example, you can write two-thirds in fractional form – 2/3 – or as a decimal – 0.667 – and either way, you calculate two-thirds of a number by multiplying by that number.

2/3 is equivalent to the fraction two-thirds, which means it is equal to 66.66666667 percent. When converted to a decimal, 2/3 is . 666666667. In other words, two-thirds of something is equal to two out of every three parts of that thing.

To determine your final grade for a course in college, add up all of your grades (except the final exam). Then, add up all of the total points possible (except your final exam). Divide your grades total by the total points possible.