62.87% is the change from 509 to 829
Calculation steps:
[( 829 - 509 ) ÷ 509] x 100 = 62.87%
Formula
Percentage change = [(829 - 509) / 509] x 100
Subtract the new number by the original number
829 - 509 = 320
320 ÷ 509 = 0.6286836935166994
0.6286836935166994 x 100 = 62.87%