-72.29% is the change from 866 to 240
Calculation steps:
[( 240 - 866 ) ÷ 866] x 100 = -72.29%
Formula
Percentage change = [(240 - 866) / 866] x 100
Subtract the new number by the original number
240 - 866 = -626
-626 ÷ 866 = -0.7228637413394919
-0.7228637413394919 x 100 = -72.29%