-99.42% is the change from 856 to 5
Calculation steps:
[( 5 - 856 ) ÷ 856] x 100 = -99.42%
Formula
Percentage change = [(5 - 856) / 856] x 100
Subtract the new number by the original number
5 - 856 = -851
-851 ÷ 856 = -0.9941588785046729
-0.9941588785046729 x 100 = -99.42%