-95.09% is the change from 856 to 42
Calculation steps:
[( 42 - 856 ) ÷ 856] x 100 = -95.09%
Formula
Percentage change = [(42 - 856) / 856] x 100
Subtract the new number by the original number
42 - 856 = -814
-814 ÷ 856 = -0.9509345794392523
-0.9509345794392523 x 100 = -95.09%