62.21% is the change from 344 to 558
Calculation steps:
[( 558 - 344 ) ÷ 344] x 100 = 62.21%
Formula
Percentage change = [(558 - 344) / 344] x 100
Subtract the new number by the original number
558 - 344 = 214
214 ÷ 344 = 0.622093023255814
0.622093023255814 x 100 = 62.21%