143.6% is the change from 250 to 609
Calculation steps:
[( 609 - 250 ) ÷ 250] x 100 = 143.6%
Formula
Percentage change = [(609 - 250) / 250] x 100
Subtract the new number by the original number
609 - 250 = 359
359 ÷ 250 = 1.436
1.436 x 100 = 143.6%
Example