-49.13% is the change from 800 to 407
Calculation steps:
[( 407 - 800 ) ÷ 800] x 100 = -49.13%
Formula
Percentage change = [(407 - 800) / 800] x 100
Subtract the new number by the original number
407 - 800 = -393
-393 ÷ 800 = -0.49125
-0.49125 x 100 = -49.13%