65.17% is the change from 491 to 811
Calculation steps:
[( 811 - 491 ) ÷ 491] x 100 = 65.17%
Formula
Percentage change = [(811 - 491) / 491] x 100
Subtract the new number by the original number
811 - 491 = 320
320 ÷ 491 = 0.6517311608961304
0.6517311608961304 x 100 = 65.17%