-89.48% is the change from 865 to 91
Calculation steps:
[( 91 - 865 ) ÷ 865] x 100 = -89.48%
Formula
Percentage change = [(91 - 865) / 865] x 100
Subtract the new number by the original number
91 - 865 = -774
-774 ÷ 865 = -0.8947976878612717
-0.8947976878612717 x 100 = -89.48%