66.33% is the change from 493 to 820
Calculation steps:
[( 820 - 493 ) ÷ 493] x 100 = 66.33%
Formula
Percentage change = [(820 - 493) / 493] x 100
Subtract the new number by the original number
820 - 493 = 327
327 ÷ 493 = 0.6632860040567952
0.6632860040567952 x 100 = 66.33%