-47.91% is the change from 814 to 424
Calculation steps:
[( 424 - 814 ) ÷ 814] x 100 = -47.91%
Formula
Percentage change = [(424 - 814) / 814] x 100
Subtract the new number by the original number
424 - 814 = -390
-390 ÷ 814 = -0.47911547911547914
-0.47911547911547914 x 100 = -47.91%