64.6% is the change from 339 to 558
Calculation steps:
[( 558 - 339 ) ÷ 339] x 100 = 64.6%
Formula
Percentage change = [(558 - 339) / 339] x 100
Subtract the new number by the original number
558 - 339 = 219
219 ÷ 339 = 0.6460176991150443
0.6460176991150443 x 100 = 64.6%