-82.22% is the change from 866 to 154
Calculation steps:
[( 154 - 866 ) ÷ 866] x 100 = -82.22%
Formula
Percentage change = [(154 - 866) / 866] x 100
Subtract the new number by the original number
154 - 866 = -712
-712 ÷ 866 = -0.8221709006928406
-0.8221709006928406 x 100 = -82.22%