54.62% is the change from 509 to 787
Calculation steps:
[( 787 - 509 ) ÷ 509] x 100 = 54.62%
Formula
Percentage change = [(787 - 509) / 509] x 100
Subtract the new number by the original number
787 - 509 = 278
278 ÷ 509 = 0.5461689587426326
0.5461689587426326 x 100 = 54.62%