88/176 = 50%
A fraction like 88/176 represents 50%, so it shows up whenever something is split evenly into two parts. For example, if half the students in a class are wearing sneakers, or half a pizza has been eaten, the amount is 50%.
You can picture 88/176 as one full group divided into two equal-sized groups, with 88 items in each half. A quick estimate is to notice that 88 is exactly half of 176, so the fraction is right in the middle between zero and the whole amount.
A common mistake is thinking that 88/176 is a very large fraction because both numbers are fairly big. The actual size depends on how the numerator compares with the denominator, and here the numerator is exactly half of the denominator.