-90.55% is the change from 899 to 85
Calculation steps:
[( 85 - 899 ) ÷ 899] x 100 = -90.55%
Formula
Percentage change = [(85 - 899) / 899] x 100
Subtract the new number by the original number
85 - 899 = -814
-814 ÷ 899 = -0.9054505005561735
-0.9054505005561735 x 100 = -90.55%