153.75% is the change from 240 to 609
Calculation steps:
[( 609 - 240 ) ÷ 240] x 100 = 153.75%
Formula
Percentage change = [(609 - 240) / 240] x 100
Subtract the new number by the original number
609 - 240 = 369
369 ÷ 240 = 1.5375
1.5375 x 100 = 153.75%