9.68% is the change from 558 to 612
Calculation steps:
[( 612 - 558 ) ÷ 558] x 100 = 9.68%
Formula
Percentage change = [(612 - 558) / 558] x 100
Subtract the new number by the original number
612 - 558 = 54
54 ÷ 558 = 0.0967741935483871
0.0967741935483871 x 100 = 9.68%