-90.34% is the change from 890 to 86
Calculation steps:
[( 86 - 890 ) ÷ 890] x 100 = -90.34%
Formula
Percentage change = [(86 - 890) / 890] x 100
Subtract the new number by the original number
86 - 890 = -804
-804 ÷ 890 = -0.903370786516854
-0.903370786516854 x 100 = -90.34%