38.31% is the change from 509 to 704
Calculation steps:
[( 704 - 509 ) ÷ 509] x 100 = 38.31%
Formula
Percentage change = [(704 - 509) / 509] x 100
Subtract the new number by the original number
704 - 509 = 195
195 ÷ 509 = 0.3831041257367387
0.3831041257367387 x 100 = 38.31%