70/80 as a percentage is 87.50%. This number tells you how much of a whole 70 parts out of 80 represent. The fraction can also be written as 7/8, which is the same size as the percent we just gave.
When you see 87.50%, think of it as a way to compare the fraction to 100 parts. It’s a quick way to see that 70 out of 80 is a little less than a full 100 percent, but still quite high. This kind of conversion is handy for everyday situations like grades or discounts.
In practice, using the percentage makes it easy to compare different fractions. For example, 70/80 (87.50%) is larger than 60/80 (75%) and smaller than 90/80 (112.5%). Knowing the percent helps you see these differences at a glance.
