Unless you log changes yourself to another table (perhaps with a trigger), you can't easily see the before or after images on the log. There may be some 3rd party tools that can read the log. I would check with BMC Software for starters.
Going forward, you might be able to use a monitor or trace to track transactions that have run and the SQL statements, but I am not sure what information you want (name of transaction, SQL statements, or actual changes to the data).