-4% is the change from 950 to 912
Calculation steps:
[( 912 - 950 ) ÷ 950] x 100 = -4%
Formula
Percentage change = [(912 - 950) / 950] x 100
Subtract the new number by the original number
912 - 950 = -38
-38 ÷ 950 = -0.04
-0.04 x 100 = -4%
Example