-85.2% is the change from 858 to 127
Calculation steps:
[( 127 - 858 ) ÷ 858] x 100 = -85.2%
Formula
Percentage change = [(127 - 858) / 858] x 100
Subtract the new number by the original number
127 - 858 = -731
-731 ÷ 858 = -0.8519813519813519
-0.8519813519813519 x 100 = -85.2%