-0.49% is the change from 408 to 406
Calculation steps:
[( 406 - 408 ) ÷ 408] x 100 = -0.49%
Formula
Percentage change = [(406 - 408) / 408] x 100
Subtract the new number by the original number
406 - 408 = -2
-2 ÷ 408 = -0.004901960784313725
-0.004901960784313725 x 100 = -0.49%