-98.92% is the change from 833 to 9
Calculation steps:
[( 9 - 833 ) ÷ 833] x 100 = -98.92%
Formula
Percentage change = [(9 - 833) / 833] x 100
Subtract the new number by the original number
9 - 833 = -824
-824 ÷ 833 = -0.9891956782713085
-0.9891956782713085 x 100 = -98.92%