65.23% is the change from 509 to 841
Calculation steps:
[( 841 - 509 ) ÷ 509] x 100 = 65.23%
Formula
Percentage change = [(841 - 509) / 509] x 100
Subtract the new number by the original number
841 - 509 = 332
332 ÷ 509 = 0.6522593320235757
0.6522593320235757 x 100 = 65.23%