62.4% is the change from 250 to 406
Calculation steps:
[( 406 - 250 ) ÷ 250] x 100 = 62.4%
Formula
Percentage change = [(406 - 250) / 250] x 100
Subtract the new number by the original number
406 - 250 = 156
156 ÷ 250 = 0.624
0.624 x 100 = 62.4%
Example