-3.47% is the change from 950 to 917
Calculation steps:
[( 917 - 950 ) ÷ 950] x 100 = -3.47%
Formula
Percentage change = [(917 - 950) / 950] x 100
Subtract the new number by the original number
917 - 950 = -33
-33 ÷ 950 = -0.034736842105263156
-0.034736842105263156 x 100 = -3.47%