-99.19% is the change from 861 to 7
Calculation steps:
[( 7 - 861 ) ÷ 861] x 100 = -99.19%
Formula
Percentage change = [(7 - 861) / 861] x 100
Subtract the new number by the original number
7 - 861 = -854
-854 ÷ 861 = -0.991869918699187
-0.991869918699187 x 100 = -99.19%