-81.93% is the change from 891 to 161
Calculation steps:
[( 161 - 891 ) ÷ 891] x 100 = -81.93%
Formula
Percentage change = [(161 - 891) / 891] x 100
Subtract the new number by the original number
161 - 891 = -730
-730 ÷ 891 = -0.819304152637486
-0.819304152637486 x 100 = -81.93%