-90.45% is the change from 890 to 85
Calculation steps:
[( 85 - 890 ) ÷ 890] x 100 = -90.45%
Formula
Percentage change = [(85 - 890) / 890] x 100
Subtract the new number by the original number
85 - 890 = -805
-805 ÷ 890 = -0.9044943820224719
-0.9044943820224719 x 100 = -90.45%