-99.13% is the change from 807 to 7
Calculation steps:
[( 7 - 807 ) ÷ 807] x 100 = -99.13%
Formula
Percentage change = [(7 - 807) / 807] x 100
Subtract the new number by the original number
7 - 807 = -800
-800 ÷ 807 = -0.9913258983890955
-0.9913258983890955 x 100 = -99.13%