-99.5% is the change from 793 to 4
Calculation steps:
[( 4 - 793 ) ÷ 793] x 100 = -99.5%
Formula
Percentage change = [(4 - 793) / 793] x 100
Subtract the new number by the original number
4 - 793 = -789
-789 ÷ 793 = -0.9949558638083228
-0.9949558638083228 x 100 = -99.5%