-99.28% is the change from 831 to 6
Calculation steps:
[( 6 - 831 ) ÷ 831] x 100 = -99.28%
Formula
Percentage change = [(6 - 831) / 831] x 100
Subtract the new number by the original number
6 - 831 = -825
-825 ÷ 831 = -0.9927797833935018
-0.9927797833935018 x 100 = -99.28%