64.97% is the change from 491 to 810
Calculation steps:
[( 810 - 491 ) ÷ 491] x 100 = 64.97%
Formula
Percentage change = [(810 - 491) / 491] x 100
Subtract the new number by the original number
810 - 491 = 319
319 ÷ 491 = 0.6496945010183299
0.6496945010183299 x 100 = 64.97%