-98.95% is the change from 861 to 9
Calculation steps:
[( 9 - 861 ) ÷ 861] x 100 = -98.95%
Formula
Percentage change = [(9 - 861) / 861] x 100
Subtract the new number by the original number
9 - 861 = -852
-852 ÷ 861 = -0.9895470383275261
-0.9895470383275261 x 100 = -98.95%