-42.88% is the change from 800 to 457
Calculation steps:
[( 457 - 800 ) ÷ 800] x 100 = -42.88%
Formula
Percentage change = [(457 - 800) / 800] x 100
Subtract the new number by the original number
457 - 800 = -343
-343 ÷ 800 = -0.42875
-0.42875 x 100 = -42.88%