I haven't got my owner'* manual here at work, but the handy-dandy bulb lookup website at http://www.sylvania.com/auto/carapp/ says that for a '95, 880 is standard. Some variant numbers use the same bulb but in a different socket (e.g. right-angled socket vs. straight-on socket). You might as well take your old one out first and see what you've got there; the number will probably be ink-stamped on the base.

With all due respect to willwren here, I wouldn't replace the other one until it burns out, since we're talking about foglamps here and not headlamps.

Cheapest place I've found for these bulbs is Wal-Mart, where they were around $5.87 or so last time I went looking for one. Auto Zone wanted something like $8.00 for the same thing.