-99.1% is the change from 779 to 7
Calculation steps:
[( 7 - 779 ) ÷ 779] x 100 = -99.1%
Formula
Percentage change = [(7 - 779) / 779] x 100
Subtract the new number by the original number
7 - 779 = -772
-772 ÷ 779 = -0.9910141206675225
-0.9910141206675225 x 100 = -99.1%