77.5% is the change from 240 to 426
Calculation steps:
[( 426 - 240 ) ÷ 240] x 100 = 77.5%
Formula
Percentage change = [(426 - 240) / 240] x 100
Subtract the new number by the original number
426 - 240 = 186
186 ÷ 240 = 0.775
0.775 x 100 = 77.5%
Example