The cubs won 87 games in 2013 and 75 games in 2014. find the percent decrease?

To calculate for the percent of decrease:
First: work out the difference between the two numbers that you are given with.

Decrease = Original Number - New Number

Second: divide the decrease by the original number and multiply the answer by 100.
In formula terms it would look like this percent of decrease = Decrease ÷ Original
Number × 100

= (87-75) / 87 x 100

= 12/87 x 100

= 0.137931034 x 100

=13.79%