41.69% is the change from 355 to 503
Calculation steps:
[( 503 - 355 ) ÷ 355] x 100 = 41.69%
Formula
Percentage change = [(503 - 355) / 355] x 100
Subtract the new number by the original number
503 - 355 = 148
148 ÷ 355 = 0.4169014084507042
0.4169014084507042 x 100 = 41.69%