Format Date In Cell To Custom Format?

I have a column in excel which gets populated in the format "2/1/1980" when copied from a different source. I want a macro to run on this column and convert this in the below format. Required format: '02-01-80 (note the ' symbol before 02 which will keep it as text)

Existing ----> Required
2/1/1980 --> '02-01-80
2/1/1970 --> '02-01-70
2/1/1983 --> '02-01-83

I need this macro to run on two columns and replace them with the required format. I can do a find and replace either in the sheet or through hard coding the VBA, but as the date format keeps growing, I would need to do this via code and hence requesting the same.