21.6% is the change from 486 to 591
Calculation steps:
[( 591 - 486 ) ÷ 486] x 100 = 21.6%
Formula
Percentage change = [(591 - 486) / 486] x 100
Subtract the new number by the original number
591 - 486 = 105
105 ÷ 486 = 0.21604938271604937
0.21604938271604937 x 100 = 21.6%