-81% is the change from 863 to 164
Calculation steps:
[( 164 - 863 ) ÷ 863] x 100 = -81%
Formula
Percentage change = [(164 - 863) / 863] x 100
Subtract the new number by the original number
164 - 863 = -699
-699 ÷ 863 = -0.8099652375434531
-0.8099652375434531 x 100 = -81%