3370% is the change from 20 to 694
Calculation steps:
[( 694 - 20 ) ÷ 20] x 100 = 3370%
Formula
Percentage change = [(694 - 20) / 20] x 100
Subtract the new number by the original number
694 - 20 = 674
674 ÷ 20 = 33.7
33.7 x 100 = 3370%
Example