63.16% is the change from 342 to 558
Calculation steps:
[( 558 - 342 ) ÷ 342] x 100 = 63.16%
Formula
Percentage change = [(558 - 342) / 342] x 100
Subtract the new number by the original number
558 - 342 = 216
216 ÷ 342 = 0.631578947368421
0.631578947368421 x 100 = 63.16%