-80.58% is the change from 829 to 161
Calculation steps:
[( 161 - 829 ) ÷ 829] x 100 = -80.58%
Formula
Percentage change = [(161 - 829) / 829] x 100
Subtract the new number by the original number
161 - 829 = -668
-668 ÷ 829 = -0.8057901085645356
-0.8057901085645356 x 100 = -80.58%