During the month of february fabulous feet shole mart sold 50 pairs of red loafers after an ad campaign to boost sales they sold 58 pairs in march find the percent of increase in sales

It's a 16% increase

The first way you could do it

First, you have to subtract 58-50 because you need to find how much more red loafers they sold in March than in February.
58-50=8
Then you need to divide 8/50 to get 0.16, which is also 16% increase.

The other way you could've done it

You would do the same first step as you woulf in the first way, but you could try finding what other fraction that has 100 as the denominator and is equal to 8/50.