19.39% is the change from 428 to 511
Calculation steps:
[( 511 - 428 ) ÷ 428] x 100 = 19.39%
Formula
Percentage change = [(511 - 428) / 428] x 100
Subtract the new number by the original number
511 - 428 = 83
83 ÷ 428 = 0.1939252336448598
0.1939252336448598 x 100 = 19.39%