68.76% is the change from 509 to 859
Calculation steps:
[( 859 - 509 ) ÷ 509] x 100 = 68.76%
Formula
Percentage change = [(859 - 509) / 509] x 100
Subtract the new number by the original number
859 - 509 = 350
350 ÷ 509 = 0.68762278978389
0.68762278978389 x 100 = 68.76%