37.5% is the change from 240 to 330
Calculation steps:
[( 330 - 240 ) ÷ 240] x 100 = 37.5%
Formula
Percentage change = [(330 - 240) / 240] x 100
Subtract the new number by the original number
330 - 240 = 90
90 ÷ 240 = 0.375
0.375 x 100 = 37.5%
Example