-49.5% is the change from 800 to 404
Calculation steps:
[( 404 - 800 ) ÷ 800] x 100 = -49.5%
Formula
Percentage change = [(404 - 800) / 800] x 100
Subtract the new number by the original number
404 - 800 = -396
-396 ÷ 800 = -0.495
-0.495 x 100 = -49.5%