-98.38% is the change from 804 to 13
Calculation steps:
[( 13 - 804 ) ÷ 804] x 100 = -98.38%
Formula
Percentage change = [(13 - 804) / 804] x 100
Subtract the new number by the original number
13 - 804 = -791
-791 ÷ 804 = -0.9838308457711443
-0.9838308457711443 x 100 = -98.38%