3390% is the change from 20 to 698
Calculation steps:
[( 698 - 20 ) ÷ 20] x 100 = 3390%
Formula
Percentage change = [(698 - 20) / 20] x 100
Subtract the new number by the original number
698 - 20 = 678
678 ÷ 20 = 33.9
33.9 x 100 = 3390%
Example