58.15% is the change from 509 to 805
Calculation steps:
[( 805 - 509 ) ÷ 509] x 100 = 58.15%
Formula
Percentage change = [(805 - 509) / 509] x 100
Subtract the new number by the original number
805 - 509 = 296
296 ÷ 509 = 0.581532416502947
0.581532416502947 x 100 = 58.15%