-82.68% is the change from 866 to 150
Calculation steps:
[( 150 - 866 ) ÷ 866] x 100 = -82.68%
Formula
Percentage change = [(150 - 866) / 866] x 100
Subtract the new number by the original number
150 - 866 = -716
-716 ÷ 866 = -0.8267898383371824
-0.8267898383371824 x 100 = -82.68%