What is the percent of change in this question?

Question

Last week, you finished Level 2 of a video game in 32 minutes. Today, you finish level 2 in 28 minutes. What is your percent of change?

Answer 1

% = (32-28)*100%/32 = 12.5 %

The time has decreased 12.5%

Answer 2

32 down to 28

32-28=4

4/32=1/8=0.125=12.5% decrease