-43.88% is the change from 800 to 449
Calculation steps:
[( 449 - 800 ) ÷ 800] x 100 = -43.88%
Formula
Percentage change = [(449 - 800) / 800] x 100
Subtract the new number by the original number
449 - 800 = -351
-351 ÷ 800 = -0.43875
-0.43875 x 100 = -43.88%