-98.94% is the change from 849 to 9
Calculation steps:
[( 9 - 849 ) ÷ 849] x 100 = -98.94%
Formula
Percentage change = [(9 - 849) / 849] x 100
Subtract the new number by the original number
9 - 849 = -840
-840 ÷ 849 = -0.9893992932862191
-0.9893992932862191 x 100 = -98.94%