-75.3% is the change from 166 to 41
Calculation steps:
[( 41 - 166 ) ÷ 166] x 100 = -75.3%
Formula
Percentage change = [(41 - 166) / 166] x 100
Subtract the new number by the original number
41 - 166 = -125
-125 ÷ 166 = -0.7530120481927711
-0.7530120481927711 x 100 = -75.3%