63.6% is the change from 250 to 409
Calculation steps:
[( 409 - 250 ) ÷ 250] x 100 = 63.6%
Formula
Percentage change = [(409 - 250) / 250] x 100
Subtract the new number by the original number
409 - 250 = 159
159 ÷ 250 = 0.636
0.636 x 100 = 63.6%
Example