64.19% is the change from 497 to 816
Calculation steps:
[( 816 - 497 ) ÷ 497] x 100 = 64.19%
Formula
Percentage change = [(816 - 497) / 497] x 100
Subtract the new number by the original number
816 - 497 = 319
319 ÷ 497 = 0.641851106639839
0.641851106639839 x 100 = 64.19%