How to make a macro cell independent

Hi,

I am new to macro recording and VBA. How do I make a macro cell independent? For example, I currently have:

Range("K4").Value = Range("K4").Value - 1

i.e. minus 1 from the current value in the cell K4.

Say then I move the content of K4 to some new location, e.g. I've added a new row above so K4 has now been shifted to K5. How do I program it so that the macro automatically performs the original operation in the new arbitary location?

Thanks for any help