-98.7% is the change from 845 to 11
Calculation steps:
[( 11 - 845 ) ÷ 845] x 100 = -98.7%
Formula
Percentage change = [(11 - 845) / 845] x 100
Subtract the new number by the original number
11 - 845 = -834
-834 ÷ 845 = -0.98698224852071
-0.98698224852071 x 100 = -98.7%