-48.28% is the change from 814 to 421
Calculation steps:
[( 421 - 814 ) ÷ 814] x 100 = -48.28%
Formula
Percentage change = [(421 - 814) / 814] x 100
Subtract the new number by the original number
421 - 814 = -393
-393 ÷ 814 = -0.4828009828009828
-0.4828009828009828 x 100 = -48.28%