-87.69% is the change from 804 to 99
Calculation steps:
[( 99 - 804 ) ÷ 804] x 100 = -87.69%
Formula
Percentage change = [(99 - 804) / 804] x 100
Subtract the new number by the original number
99 - 804 = -705
-705 ÷ 804 = -0.8768656716417911
-0.8768656716417911 x 100 = -87.69%