-80.22% is the change from 824 to 163
Calculation steps:
[( 163 - 824 ) ÷ 824] x 100 = -80.22%
Formula
Percentage change = [(163 - 824) / 824] x 100
Subtract the new number by the original number
163 - 824 = -661
-661 ÷ 824 = -0.8021844660194175
-0.8021844660194175 x 100 = -80.22%