183.33% is the change from 240 to 680
Calculation steps:
[( 680 - 240 ) ÷ 240] x 100 = 183.33%
Formula
Percentage change = [(680 - 240) / 240] x 100
Subtract the new number by the original number
680 - 240 = 440
440 ÷ 240 = 1.8333333333333333
1.8333333333333333 x 100 = 183.33%