26.33% is the change from 509 to 643
Calculation steps:
[( 643 - 509 ) ÷ 509] x 100 = 26.33%
Formula
Percentage change = [(643 - 509) / 509] x 100
Subtract the new number by the original number
643 - 509 = 134
134 ÷ 509 = 0.2632612966601179
0.2632612966601179 x 100 = 26.33%