2900% is the change from 22 to 660
Calculation steps:
[( 660 - 22 ) ÷ 22] x 100 = 2900%
Formula
Percentage change = [(660 - 22) / 22] x 100
Subtract the new number by the original number
660 - 22 = 638
638 ÷ 22 = 29
29 x 100 = 2900%
Example