-4% is the change from 975 to 936
Calculation steps:
[( 936 - 975 ) ÷ 975] x 100 = -4%
Formula
Percentage change = [(936 - 975) / 975] x 100
Subtract the new number by the original number
936 - 975 = -39
-39 ÷ 975 = -0.04
-0.04 x 100 = -4%
Example