187.5% is the change from 240 to 690
Calculation steps:
[( 690 - 240 ) ÷ 240] x 100 = 187.5%
Formula
Percentage change = [(690 - 240) / 240] x 100
Subtract the new number by the original number
690 - 240 = 450
450 ÷ 240 = 1.875
1.875 x 100 = 187.5%
Example