49.84% is the change from 319 to 478
Calculation steps:
[( 478 - 319 ) ÷ 319] x 100 = 49.84%
Formula
Percentage change = [(478 - 319) / 319] x 100
Subtract the new number by the original number
478 - 319 = 159
159 ÷ 319 = 0.49843260188087773
0.49843260188087773 x 100 = 49.84%