Issues with Match function, Please Help

[mehtap3]

I have a list of percentages starting from say 5% to 70% in increments of 5%, I would like to use the match function to obtain the row number associated with a particular % in the range. The issue I am having is when I look for 15% it gives me an error (when it should give me 3) but when I look for say 20% it gives me the correct answer as 4. Can you please help, I don't understand why I am getting this error. Its driving me crazy.

I also tried doing a Vlookup by creating a column next to the cells from 1 to say 4, then run a Vlookup for 15%, I get the same error. What am i doing wrong?

 

[mehtap3]

I entered into Cell A2 =A1+0.05

and then copied it down to A14

Have to modify formula to: =MATCH(C1,$A$1:$A$14,1)

Thanks Jim, that works for now. I might have to control the input so users don't insert numbers that are outside the list.