-89.44% is the change from 862 to 91
Calculation steps:
[( 91 - 862 ) ÷ 862] x 100 = -89.44%
Formula
Percentage change = [(91 - 862) / 862] x 100
Subtract the new number by the original number
91 - 862 = -771
-771 ÷ 862 = -0.894431554524362
-0.894431554524362 x 100 = -89.44%