7.41% is the change from 270 to 290
Calculation steps:
[( 290 - 270 ) ÷ 270] x 100 = 7.41%
Formula
Percentage change = [(290 - 270) / 270] x 100
Subtract the new number by the original number
290 - 270 = 20
20 ÷ 270 = 0.07407407407407407
0.07407407407407407 x 100 = 7.41%