-99.09% is the change from 985 to 9
Calculation steps:
[( 9 - 985 ) ÷ 985] x 100 = -99.09%
Formula
Percentage change = [(9 - 985) / 985] x 100
Subtract the new number by the original number
9 - 985 = -976
-976 ÷ 985 = -0.9908629441624366
-0.9908629441624366 x 100 = -99.09%