33.55% is the change from 456 to 609
Calculation steps:
[( 609 - 456 ) ÷ 456] x 100 = 33.55%
Formula
Percentage change = [(609 - 456) / 456] x 100
Subtract the new number by the original number
609 - 456 = 153
153 ÷ 456 = 0.3355263157894737
0.3355263157894737 x 100 = 33.55%