2/88 as a percentage is 2.27%. This tiny slice of a whole shows just how small a part it represents when turned into a percent.
The fraction 2/88 can be reduced to 1/44, which still gives the same percent value. It’s useful when you need to compare tiny amounts, like a small portion of a class or a tiny discount.
Seeing the number as a percent makes it easier to understand at a glance. 2.27% tells you that out of every 100 parts, only a little over two are covered by this fraction.