64.2% is the change from 338 to 555
Calculation steps:
[( 555 - 338 ) ÷ 338] x 100 = 64.2%
Formula
Percentage change = [(555 - 338) / 338] x 100
Subtract the new number by the original number
555 - 338 = 217
217 ÷ 338 = 0.6420118343195266
0.6420118343195266 x 100 = 64.2%