-4.57% is the change from 438 to 418
Calculation steps:
[( 418 - 438 ) ÷ 438] x 100 = -4.57%
Formula
Percentage change = [(418 - 438) / 438] x 100
Subtract the new number by the original number
418 - 438 = -20
-20 ÷ 438 = -0.045662100456621
-0.045662100456621 x 100 = -4.57%