2200% is the change from 30 to 690
Calculation steps:
[( 690 - 30 ) ÷ 30] x 100 = 2200%
Formula
Percentage change = [(690 - 30) / 30] x 100
Subtract the new number by the original number
690 - 30 = 660
660 ÷ 30 = 22
22 x 100 = 2200%
Example