210% is the change from 240 to 744
Calculation steps:
[( 744 - 240 ) ÷ 240] x 100 = 210%
Formula
Percentage change = [(744 - 240) / 240] x 100
Subtract the new number by the original number
744 - 240 = 504
504 ÷ 240 = 2.1
2.1 x 100 = 210%
Example