74.83% is the change from 290 to 507
Calculation steps:
[( 507 - 290 ) ÷ 290] x 100 = 74.83%
Formula
Percentage change = [(507 - 290) / 290] x 100
Subtract the new number by the original number
507 - 290 = 217
217 ÷ 290 = 0.7482758620689656
0.7482758620689656 x 100 = 74.83%