48.91% is the change from 321 to 478
Calculation steps:
[( 478 - 321 ) ÷ 321] x 100 = 48.91%
Formula
Percentage change = [(478 - 321) / 321] x 100
Subtract the new number by the original number
478 - 321 = 157
157 ÷ 321 = 0.48909657320872274
0.48909657320872274 x 100 = 48.91%