9355.56% is the change from 9 to 851
Calculation steps:
[( 851 - 9 ) ÷ 9] x 100 = 9355.56%
Formula
Percentage change = [(851 - 9) / 9] x 100
Subtract the new number by the original number
851 - 9 = 842
842 ÷ 9 = 93.55555555555556
93.55555555555556 x 100 = 9355.56%