63.4% is the change from 500 to 817
Calculation steps:
[( 817 - 500 ) ÷ 500] x 100 = 63.4%
Formula
Percentage change = [(817 - 500) / 500] x 100
Subtract the new number by the original number
817 - 500 = 317
317 ÷ 500 = 0.634
0.634 x 100 = 63.4%
Example