-80.79% is the change from 838 to 161
Calculation steps:
[( 161 - 838 ) ÷ 838] x 100 = -80.79%
Formula
Percentage change = [(161 - 838) / 838] x 100
Subtract the new number by the original number
161 - 838 = -677
-677 ÷ 838 = -0.8078758949880668
-0.8078758949880668 x 100 = -80.79%