20.65% is the change from 397 to 479
Calculation steps:
[( 479 - 397 ) ÷ 397] x 100 = 20.65%
Formula
Percentage change = [(479 - 397) / 397] x 100
Subtract the new number by the original number
479 - 397 = 82
82 ÷ 397 = 0.20654911838790932
0.20654911838790932 x 100 = 20.65%