-81.37% is the change from 864 to 161
Calculation steps:
[( 161 - 864 ) ÷ 864] x 100 = -81.37%
Formula
Percentage change = [(161 - 864) / 864] x 100
Subtract the new number by the original number
161 - 864 = -703
-703 ÷ 864 = -0.8136574074074074
-0.8136574074074074 x 100 = -81.37%