107.5% is the change from 240 to 498
Calculation steps:
[( 498 - 240 ) ÷ 240] x 100 = 107.5%
Formula
Percentage change = [(498 - 240) / 240] x 100
Subtract the new number by the original number
498 - 240 = 258
258 ÷ 240 = 1.075
1.075 x 100 = 107.5%
Example