71.38% is the change from 290 to 497
Calculation steps:
[( 497 - 290 ) ÷ 290] x 100 = 71.38%
Formula
Percentage change = [(497 - 290) / 290] x 100
Subtract the new number by the original number
497 - 290 = 207
207 ÷ 290 = 0.7137931034482758
0.7137931034482758 x 100 = 71.38%