49.06% is the change from 320 to 477
Calculation steps:
[( 477 - 320 ) ÷ 320] x 100 = 49.06%
Formula
Percentage change = [(477 - 320) / 320] x 100
Subtract the new number by the original number
477 - 320 = 157
157 ÷ 320 = 0.490625
0.490625 x 100 = 49.06%