-72.06% is the change from 866 to 242
Calculation steps:
[( 242 - 866 ) ÷ 866] x 100 = -72.06%
Formula
Percentage change = [(242 - 866) / 866] x 100
Subtract the new number by the original number
242 - 866 = -624
-624 ÷ 866 = -0.7205542725173211
-0.7205542725173211 x 100 = -72.06%