3% is the change from 100 to 103
Calculation steps:
[( 103 - 100 ) ÷ 100] x 100 = 3%
Formula
Percentage change = [(103 - 100) / 100] x 100
Subtract the new number by the original number
103 - 100 = 3
3 ÷ 100 = 0.03
0.03 x 100 = 3%
Example