50.31% is the change from 326 to 490
Calculation steps:
[( 490 - 326 ) ÷ 326] x 100 = 50.31%
Formula
Percentage change = [(490 - 326) / 326] x 100
Subtract the new number by the original number
490 - 326 = 164
164 ÷ 326 = 0.5030674846625767
0.5030674846625767 x 100 = 50.31%