Trigger to Capture Changes

I have a table that contains 28 columns of very sensitive data. I have a trigger in place to capture current rows and write them to an audit table prior ro inserts, updates, and deletes. What I really need is a way to capture just the columns that have changed, and generate a report containing just the changes. I'd like some advice while I'm in the planning stages of this effort. Any insight will be appreciated.

Ed Jennings

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jennings_at_dca.net