-99.53% is the change from 856 to 4
Calculation steps:
[( 4 - 856 ) ÷ 856] x 100 = -99.53%
Formula
Percentage change = [(4 - 856) / 856] x 100
Subtract the new number by the original number
4 - 856 = -852
-852 ÷ 856 = -0.9953271028037384
-0.9953271028037384 x 100 = -99.53%