-50.12% is the change from 814 to 406
Calculation steps:
[( 406 - 814 ) ÷ 814] x 100 = -50.12%
Formula
Percentage change = [(406 - 814) / 814] x 100
Subtract the new number by the original number
406 - 814 = -408
-408 ÷ 814 = -0.5012285012285013
-0.5012285012285013 x 100 = -50.12%