-98.39% is the change from 808 to 13
Calculation steps:
[( 13 - 808 ) ÷ 808] x 100 = -98.39%
Formula
Percentage change = [(13 - 808) / 808] x 100
Subtract the new number by the original number
13 - 808 = -795
-795 ÷ 808 = -0.9839108910891089
-0.9839108910891089 x 100 = -98.39%