-99.07% is the change from 864 to 8
Calculation steps:
[( 8 - 864 ) ÷ 864] x 100 = -99.07%
Formula
Percentage change = [(8 - 864) / 864] x 100
Subtract the new number by the original number
8 - 864 = -856
-856 ÷ 864 = -0.9907407407407407
-0.9907407407407407 x 100 = -99.07%