-83.37% is the change from 866 to 144
Calculation steps:
[( 144 - 866 ) ÷ 866] x 100 = -83.37%
Formula
Percentage change = [(144 - 866) / 866] x 100
Subtract the new number by the original number
144 - 866 = -722
-722 ÷ 866 = -0.8337182448036952
-0.8337182448036952 x 100 = -83.37%