If you assume that a president isn't responsible for the first year of debt under his administration, but is responsible for the first year following his administration, then total debt under Bush was up 108%. For Obama, so far, up 16%. Or,
For Bush, up 14 percentage points per year.
For Obama, up 11 percentage points per year.
Finally: Increase in total debt in the last 3 months: only $135B.
Numbers from US Dept of Treasury.