-98.35% is the change from 790 to 13
Calculation steps:
[( 13 - 790 ) ÷ 790] x 100 = -98.35%
Formula
Percentage change = [(13 - 790) / 790] x 100
Subtract the new number by the original number
13 - 790 = -777
-777 ÷ 790 = -0.9835443037974684
-0.9835443037974684 x 100 = -98.35%