20.2% is the change from 406 to 488
Calculation steps:
[( 488 - 406 ) ÷ 406] x 100 = 20.2%
Formula
Percentage change = [(488 - 406) / 406] x 100
Subtract the new number by the original number
488 - 406 = 82
82 ÷ 406 = 0.2019704433497537
0.2019704433497537 x 100 = 20.2%