129.58% is the change from 240 to 551
Calculation steps:
[( 551 - 240 ) ÷ 240] x 100 = 129.58%
Formula
Percentage change = [(551 - 240) / 240] x 100
Subtract the new number by the original number
551 - 240 = 311
311 ÷ 240 = 1.2958333333333334
1.2958333333333334 x 100 = 129.58%