Computer sales decreased from 40 to 32. what is the percent of decrease?

First: Find the difference between the two numbers.

40 - 32 = 8

Second: Take the decrease and divide by the original number.

8 / 40 = 0.2

Third: Multiply your decimal by 100 to get the percent.

0.2 x 100 = 20%

It is the top one. the answer is -7. that is smallest