70.5% is the change from 478 to 815
Calculation steps:
[( 815 - 478 ) ÷ 478] x 100 = 70.5%
Formula
Percentage change = [(815 - 478) / 478] x 100
Subtract the new number by the original number
815 - 478 = 337
337 ÷ 478 = 0.7050209205020921
0.7050209205020921 x 100 = 70.5%