217.09% is the change from 234 to 742
Calculation steps:
[( 742 - 234 ) ÷ 234] x 100 = 217.09%
Formula
Percentage change = [(742 - 234) / 234] x 100
Subtract the new number by the original number
742 - 234 = 508
508 ÷ 234 = 2.1709401709401708
2.1709401709401708 x 100 = 217.09%