When running condensediffs, the decoded diff content was being used for

the byte counts, rather than the stored base64 content. This gave an

inaccurate result for the total number of bytes and the bytes saved.
The percentage was also wrong, due to a bad calculation. Now it shows an

accurate savings as a percentage, and also shows up to 2 decimal places.

Ran a condensediffs and saw the proper counts and percentage. It was way

off before, for the database I was using.