20.64% is the change from 407 to 491
Calculation steps:
[( 491 - 407 ) ÷ 407] x 100 = 20.64%
Formula
Percentage change = [(491 - 407) / 407] x 100
Subtract the new number by the original number
491 - 407 = 84
84 ÷ 407 = 0.20638820638820637
0.20638820638820637 x 100 = 20.64%