3325% is the change from 20 to 685
Calculation steps:
[( 685 - 20 ) ÷ 20] x 100 = 3325%
Formula
Percentage change = [(685 - 20) / 20] x 100
Subtract the new number by the original number
685 - 20 = 665
665 ÷ 20 = 33.25
33.25 x 100 = 3325%
Example