-12.54% is the change from 638 to 558
Calculation steps:
[( 558 - 638 ) ÷ 638] x 100 = -12.54%
Formula
Percentage change = [(558 - 638) / 638] x 100
Subtract the new number by the original number
558 - 638 = -80
-80 ÷ 638 = -0.12539184952978055
-0.12539184952978055 x 100 = -12.54%