39.33% is the change from 478 to 666
Calculation steps:
[( 666 - 478 ) ÷ 478] x 100 = 39.33%
Formula
Percentage change = [(666 - 478) / 478] x 100
Subtract the new number by the original number
666 - 478 = 188
188 ÷ 478 = 0.39330543933054396
0.39330543933054396 x 100 = 39.33%