-82.14% is the change from 823 to 147
Calculation steps:
[( 147 - 823 ) ÷ 823] x 100 = -82.14%
Formula
Percentage change = [(147 - 823) / 823] x 100
Subtract the new number by the original number
147 - 823 = -676
-676 ÷ 823 = -0.8213851761846902
-0.8213851761846902 x 100 = -82.14%