-6.81% is the change from 558 to 520
Calculation steps:
[( 520 - 558 ) ÷ 558] x 100 = -6.81%
Formula
Percentage change = [(520 - 558) / 558] x 100
Subtract the new number by the original number
520 - 558 = -38
-38 ÷ 558 = -0.06810035842293907
-0.06810035842293907 x 100 = -6.81%