-82.83% is the change from 821 to 141
Calculation steps:
[( 141 - 821 ) ÷ 821] x 100 = -82.83%
Formula
Percentage change = [(141 - 821) / 821] x 100
Subtract the new number by the original number
141 - 821 = -680
-680 ÷ 821 = -0.8282582216808769
-0.8282582216808769 x 100 = -82.83%