415% is the change from 20 to 103
Calculation steps:
[( 103 - 20 ) ÷ 20] x 100 = 415%
Formula
Percentage change = [(103 - 20) / 20] x 100
Subtract the new number by the original number
103 - 20 = 83
83 ÷ 20 = 4.15
4.15 x 100 = 415%
Example