-0.45% is the change from 440 to 438
Calculation steps:
[( 438 - 440 ) ÷ 440] x 100 = -0.45%
Formula
Percentage change = [(438 - 440) / 440] x 100
Subtract the new number by the original number
438 - 440 = -2
-2 ÷ 440 = -0.004545454545454545
-0.004545454545454545 x 100 = -0.45%