75.07% is the change from 345 to 604
Calculation steps:
[( 604 - 345 ) ÷ 345] x 100 = 75.07%
Formula
Percentage change = [(604 - 345) / 345] x 100
Subtract the new number by the original number
604 - 345 = 259
259 ÷ 345 = 0.7507246376811594
0.7507246376811594 x 100 = 75.07%