-90.41% is the change from 897 to 86
Calculation steps:
[( 86 - 897 ) ÷ 897] x 100 = -90.41%
Formula
Percentage change = [(86 - 897) / 897] x 100
Subtract the new number by the original number
86 - 897 = -811
-811 ÷ 897 = -0.9041248606465998
-0.9041248606465998 x 100 = -90.41%