74.28% is the change from 346 to 603
Calculation steps:
[( 603 - 346 ) ÷ 346] x 100 = 74.28%
Formula
Percentage change = [(603 - 346) / 346] x 100
Subtract the new number by the original number
603 - 346 = 257
257 ÷ 346 = 0.7427745664739884
0.7427745664739884 x 100 = 74.28%