39.45% is the change from 398 to 555
Calculation steps:
[( 555 - 398 ) ÷ 398] x 100 = 39.45%
Formula
Percentage change = [(555 - 398) / 398] x 100
Subtract the new number by the original number
555 - 398 = 157
157 ÷ 398 = 0.3944723618090452
0.3944723618090452 x 100 = 39.45%