-71.32% is the change from 823 to 236
Calculation steps:
[( 236 - 823 ) ÷ 823] x 100 = -71.32%
Formula
Percentage change = [(236 - 823) / 823] x 100
Subtract the new number by the original number
236 - 823 = -587
-587 ÷ 823 = -0.7132442284325637
-0.7132442284325637 x 100 = -71.32%