65.58% is the change from 491 to 813
Calculation steps:
[( 813 - 491 ) ÷ 491] x 100 = 65.58%
Formula
Percentage change = [(813 - 491) / 491] x 100
Subtract the new number by the original number
813 - 491 = 322
322 ÷ 491 = 0.6558044806517311
0.6558044806517311 x 100 = 65.58%