2390% is the change from 30 to 747
Calculation steps:
[( 747 - 30 ) ÷ 30] x 100 = 2390%
Formula
Percentage change = [(747 - 30) / 30] x 100
Subtract the new number by the original number
747 - 30 = 717
717 ÷ 30 = 23.9
23.9 x 100 = 2390%
Example