-98.13% is the change from 804 to 15
Calculation steps:
[( 15 - 804 ) ÷ 804] x 100 = -98.13%
Formula
Percentage change = [(15 - 804) / 804] x 100
Subtract the new number by the original number
15 - 804 = -789
-789 ÷ 804 = -0.9813432835820896
-0.9813432835820896 x 100 = -98.13%