-4.2% is the change from 952 to 912
Calculation steps:
[( 912 - 952 ) ÷ 952] x 100 = -4.2%
Formula
Percentage change = [(912 - 952) / 952] x 100
Subtract the new number by the original number
912 - 952 = -40
-40 ÷ 952 = -0.04201680672268908
-0.04201680672268908 x 100 = -4.2%