10/75 as a percentage is 13.33%. This number tells you how much of a whole 10 parts out of 75 represent when you look at it in terms of 100.
The fraction 10/75 can be reduced to 2/15, which still gives the same percentage value. Whether you write it as a fraction, a decimal, or a percent, the proportion stays the same.
Knowing the percent makes it easy to compare with other values, like grades or discounts, because most people think in terms of “out of 100.” So when you see 13.33%, you instantly understand the size of the part relative to a whole.
