19.48% is the change from 426 to 509
Calculation steps:
[( 509 - 426 ) ÷ 426] x 100 = 19.48%
Formula
Percentage change = [(509 - 426) / 426] x 100
Subtract the new number by the original number
509 - 426 = 83
83 ÷ 426 = 0.19483568075117372
0.19483568075117372 x 100 = 19.48%