64.79% is the change from 497 to 819
Calculation steps:
[( 819 - 497 ) ÷ 497] x 100 = 64.79%
Formula
Percentage change = [(819 - 497) / 497] x 100
Subtract the new number by the original number
819 - 497 = 322
322 ÷ 497 = 0.647887323943662
0.647887323943662 x 100 = 64.79%