-98.93% is the change from 845 to 9
Calculation steps:
[( 9 - 845 ) ÷ 845] x 100 = -98.93%
Formula
Percentage change = [(9 - 845) / 845] x 100
Subtract the new number by the original number
9 - 845 = -836
-836 ÷ 845 = -0.9893491124260355
-0.9893491124260355 x 100 = -98.93%