69.35% is the change from 509 to 862
Calculation steps:
[( 862 - 509 ) ÷ 509] x 100 = 69.35%
Formula
Percentage change = [(862 - 509) / 509] x 100
Subtract the new number by the original number
862 - 509 = 353
353 ÷ 509 = 0.693516699410609
0.693516699410609 x 100 = 69.35%