30.4% is the change from 250 to 326
Calculation steps:
[( 326 - 250 ) ÷ 250] x 100 = 30.4%
Formula
Percentage change = [(326 - 250) / 250] x 100
Subtract the new number by the original number
326 - 250 = 76
76 ÷ 250 = 0.304
0.304 x 100 = 30.4%
Example