-80.95% is the change from 845 to 161
Calculation steps:
[( 161 - 845 ) ÷ 845] x 100 = -80.95%
Formula
Percentage change = [(161 - 845) / 845] x 100
Subtract the new number by the original number
161 - 845 = -684
-684 ÷ 845 = -0.8094674556213017
-0.8094674556213017 x 100 = -80.95%