83.69% is the change from 509 to 935
Calculation steps:
[( 935 - 509 ) ÷ 509] x 100 = 83.69%
Formula
Percentage change = [(935 - 509) / 509] x 100
Subtract the new number by the original number
935 - 509 = 426
426 ÷ 509 = 0.8369351669941061
0.8369351669941061 x 100 = 83.69%