-95.11% is the change from 859 to 42
Calculation steps:
[( 42 - 859 ) ÷ 859] x 100 = -95.11%
Formula
Percentage change = [(42 - 859) / 859] x 100
Subtract the new number by the original number
42 - 859 = -817
-817 ÷ 859 = -0.9511059371362048
-0.9511059371362048 x 100 = -95.11%