Translate a file from English to Polish

have a file in excel format (can be opened in Excel or as a Google spreadsheet), there are 437 rows of strings that need to be translated. Some are just a single word others a sentence or two.

These are user interface strings for our product. So the job is to work through the file translating the string on the right into Polish leaving the string on the left untouched as English. There are placeholders in the file that need to be maintained. These look like %s - for example "Deleting the %s Page" these need to exist in the Polish version too so our software can replace out the actual page name.