55.21% is the change from 509 to 790
Calculation steps:
[( 790 - 509 ) ÷ 509] x 100 = 55.21%
Formula
Percentage change = [(790 - 509) / 509] x 100
Subtract the new number by the original number
790 - 509 = 281
281 ÷ 509 = 0.5520628683693517
0.5520628683693517 x 100 = 55.21%