-20.27% is the change from 804 to 641
Calculation steps:
[( 641 - 804 ) ÷ 804] x 100 = -20.27%
Formula
Percentage change = [(641 - 804) / 804] x 100
Subtract the new number by the original number
641 - 804 = -163
-163 ÷ 804 = -0.2027363184079602
-0.2027363184079602 x 100 = -20.27%