-6.63% is the change from 558 to 521
Calculation steps:
[( 521 - 558 ) ÷ 558] x 100 = -6.63%
Formula
Percentage change = [(521 - 558) / 558] x 100
Subtract the new number by the original number
521 - 558 = -37
-37 ÷ 558 = -0.06630824372759857
-0.06630824372759857 x 100 = -6.63%