-5.1% is the change from 588 to 558
Calculation steps:
[( 558 - 588 ) ÷ 588] x 100 = -5.1%
Formula
Percentage change = [(558 - 588) / 588] x 100
Subtract the new number by the original number
558 - 588 = -30
-30 ÷ 588 = -0.05102040816326531
-0.05102040816326531 x 100 = -5.1%