56.75% is the change from 326 to 511
Calculation steps:
[( 511 - 326 ) ÷ 326] x 100 = 56.75%
Formula
Percentage change = [(511 - 326) / 326] x 100
Subtract the new number by the original number
511 - 326 = 185
185 ÷ 326 = 0.5674846625766872
0.5674846625766872 x 100 = 56.75%