-99.19% is the change from 864 to 7
Calculation steps:
[( 7 - 864 ) ÷ 864] x 100 = -99.19%
Formula
Percentage change = [(7 - 864) / 864] x 100
Subtract the new number by the original number
7 - 864 = -857
-857 ÷ 864 = -0.9918981481481481
-0.9918981481481481 x 100 = -99.19%