54.42% is the change from 509 to 786
Calculation steps:
[( 786 - 509 ) ÷ 509] x 100 = 54.42%
Formula
Percentage change = [(786 - 509) / 509] x 100
Subtract the new number by the original number
786 - 509 = 277
277 ÷ 509 = 0.5442043222003929
0.5442043222003929 x 100 = 54.42%