-80.6% is the change from 866 to 168
Calculation steps:
[( 168 - 866 ) ÷ 866] x 100 = -80.6%
Formula
Percentage change = [(168 - 866) / 866] x 100
Subtract the new number by the original number
168 - 866 = -698
-698 ÷ 866 = -0.8060046189376443
-0.8060046189376443 x 100 = -80.6%