-98.7% is the change from 843 to 11
Calculation steps:
[( 11 - 843 ) ÷ 843] x 100 = -98.7%
Formula
Percentage change = [(11 - 843) / 843] x 100
Subtract the new number by the original number
11 - 843 = -832
-832 ÷ 843 = -0.9869513641755635
-0.9869513641755635 x 100 = -98.7%