51.72% is the change from 290 to 440
Calculation steps:
[( 440 - 290 ) ÷ 290] x 100 = 51.72%
Formula
Percentage change = [(440 - 290) / 290] x 100
Subtract the new number by the original number
440 - 290 = 150
150 ÷ 290 = 0.5172413793103449
0.5172413793103449 x 100 = 51.72%