-98.93% is the change from 843 to 9
Calculation steps:
[( 9 - 843 ) ÷ 843] x 100 = -98.93%
Formula
Percentage change = [(9 - 843) / 843] x 100
Subtract the new number by the original number
9 - 843 = -834
-834 ÷ 843 = -0.9893238434163701
-0.9893238434163701 x 100 = -98.93%