103% is the change from 100 to 203
Calculation steps:
[( 203 - 100 ) ÷ 100] x 100 = 103%
Formula
Percentage change = [(203 - 100) / 100] x 100
Subtract the new number by the original number
203 - 100 = 103
103 ÷ 100 = 1.03
1.03 x 100 = 103%
Example