-49.75% is the change from 804 to 404
Calculation steps:
[( 404 - 804 ) ÷ 804] x 100 = -49.75%
Formula
Percentage change = [(404 - 804) / 804] x 100
Subtract the new number by the original number
404 - 804 = -400
-400 ÷ 804 = -0.4975124378109453
-0.4975124378109453 x 100 = -49.75%