-0.73% is the change from 409 to 406
Calculation steps:
[( 406 - 409 ) ÷ 409] x 100 = -0.73%
Formula
Percentage change = [(406 - 409) / 409] x 100
Subtract the new number by the original number
406 - 409 = -3
-3 ÷ 409 = -0.007334963325183374
-0.007334963325183374 x 100 = -0.73%