-81.29% is the change from 866 to 162
Calculation steps:
[( 162 - 866 ) ÷ 866] x 100 = -81.29%
Formula
Percentage change = [(162 - 866) / 866] x 100
Subtract the new number by the original number
162 - 866 = -704
-704 ÷ 866 = -0.812933025404157
-0.812933025404157 x 100 = -81.29%