-0.5% is the change from 404 to 402
Calculation steps:
[( 402 - 404 ) ÷ 404] x 100 = -0.5%
Formula
Percentage change = [(402 - 404) / 404] x 100
Subtract the new number by the original number
402 - 404 = -2
-2 ÷ 404 = -0.0049504950495049506
-0.0049504950495049506 x 100 = -0.5%