74.5% is the change from 349 to 609
Calculation steps:
[( 609 - 349 ) ÷ 349] x 100 = 74.5%
Formula
Percentage change = [(609 - 349) / 349] x 100
Subtract the new number by the original number
609 - 349 = 260
260 ÷ 349 = 0.7449856733524355
0.7449856733524355 x 100 = 74.5%