-81.8% is the change from 912 to 166
Calculation steps:
[( 166 - 912 ) ÷ 912] x 100 = -81.8%
Formula
Percentage change = [(166 - 912) / 912] x 100
Subtract the new number by the original number
166 - 912 = -746
-746 ÷ 912 = -0.8179824561403509
-0.8179824561403509 x 100 = -81.8%