500.74% is the change from 136 to 817
Calculation steps:
[( 817 - 136 ) ÷ 136] x 100 = 500.74%
Formula
Percentage change = [(817 - 136) / 136] x 100
Subtract the new number by the original number
817 - 136 = 681
681 ÷ 136 = 5.007352941176471
5.007352941176471 x 100 = 500.74%