-0.49% is the change from 406 to 404
Calculation steps:
[( 404 - 406 ) ÷ 406] x 100 = -0.49%
Formula
Percentage change = [(404 - 406) / 406] x 100
Subtract the new number by the original number
404 - 406 = -2
-2 ÷ 406 = -0.0049261083743842365
-0.0049261083743842365 x 100 = -0.49%