2960% is the change from 20 to 612
Calculation steps:
[( 612 - 20 ) ÷ 20] x 100 = 2960%
Formula
Percentage change = [(612 - 20) / 20] x 100
Subtract the new number by the original number
612 - 20 = 592
592 ÷ 20 = 29.6
29.6 x 100 = 2960%
Example