12.39% = 12.39 /100
Since you are dividing by 100 are it has 2 zeros, move the decimal point 2 places to the left.
= 0.1239

staytripin1999

To change percentage to decimal, we need to divide the percentage by 100, i.e. , move the decimal point 2 places to the left
12.39% >>>> Decimal
= 12.39/100
= 0.1239