-85.2% is the change from 865 to 128
Calculation steps:
[( 128 - 865 ) ÷ 865] x 100 = -85.2%
Formula
Percentage change = [(128 - 865) / 865] x 100
Subtract the new number by the original number
128 - 865 = -737
-737 ÷ 865 = -0.8520231213872832
-0.8520231213872832 x 100 = -85.2%