-98.84% is the change from 861 to 10
Calculation steps:
[( 10 - 861 ) ÷ 861] x 100 = -98.84%
Formula
Percentage change = [(10 - 861) / 861] x 100
Subtract the new number by the original number
10 - 861 = -851
-851 ÷ 861 = -0.9883855981416957
-0.9883855981416957 x 100 = -98.84%