54.48% is the change from 290 to 448
Calculation steps:
[( 448 - 290 ) ÷ 290] x 100 = 54.48%
Formula
Percentage change = [(448 - 290) / 290] x 100
Subtract the new number by the original number
448 - 290 = 158
158 ÷ 290 = 0.5448275862068965
0.5448275862068965 x 100 = 54.48%