I need to adjust values in columns by a fixed percentage for a range of data in an Excel spreadsheet. Is there a simple(ish) way to do this rather than changing every entry manually?
or put your scaling factor in a cell, copy the value, then select the range you want to change and do paste-special selecting multiply.
This changes the cell values, the better way as suggested is to put =<ref>*factor in a new cell at the top, next to the one you want to change <ref> and then drag the result down next to your originals.