3055% is the change from 20 to 631
Calculation steps:
[( 631 - 20 ) ÷ 20] x 100 = 3055%
Formula
Percentage change = [(631 - 20) / 20] x 100
Subtract the new number by the original number
631 - 20 = 611
611 ÷ 20 = 30.55
30.55 x 100 = 3055%
Example