-99.12% is the change from 797 to 7
Calculation steps:
[( 7 - 797 ) ÷ 797] x 100 = -99.12%
Formula
Percentage change = [(7 - 797) / 797] x 100
Subtract the new number by the original number
7 - 797 = -790
-790 ÷ 797 = -0.9912170639899623
-0.9912170639899623 x 100 = -99.12%