18.53% is the change from 491 to 582
Calculation steps:
[( 582 - 491 ) ÷ 491] x 100 = 18.53%
Formula
Percentage change = [(582 - 491) / 491] x 100
Subtract the new number by the original number
582 - 491 = 91
91 ÷ 491 = 0.18533604887983707
0.18533604887983707 x 100 = 18.53%