342.86% is the change from 126 to 558
Calculation steps:
[( 558 - 126 ) ÷ 126] x 100 = 342.86%
Formula
Percentage change = [(558 - 126) / 126] x 100
Subtract the new number by the original number
558 - 126 = 432
432 ÷ 126 = 3.4285714285714284
3.4285714285714284 x 100 = 342.86%