17.74% is the change from 434 to 511
Calculation steps:
[( 511 - 434 ) ÷ 434] x 100 = 17.74%
Formula
Percentage change = [(511 - 434) / 434] x 100
Subtract the new number by the original number
511 - 434 = 77
77 ÷ 434 = 0.1774193548387097
0.1774193548387097 x 100 = 17.74%