-81.15% is the change from 907 to 171
Calculation steps:
[( 171 - 907 ) ÷ 907] x 100 = -81.15%
Formula
Percentage change = [(171 - 907) / 907] x 100
Subtract the new number by the original number
171 - 907 = -736
-736 ÷ 907 = -0.8114663726571113
-0.8114663726571113 x 100 = -81.15%