I have found a few items that say "X% better chance of finding magical items". I want to know the base chance to find magical items to see whether this is a reasonable upgrade.
For example, if there is a base 5% chance to find a magical item off of a normal creature, +3% is a nice boost but nothing worth writing home about. However if the base chance is only 1%, I can easily quadruple my chances of getting magical loot with a simple +3% shield.
EDIT: As @Wikwocket pointed out, magic find is multiplicative. This makes the above example less relevant, but the question is still the same:
What is the native (naked) percentage chance to find a magical item?
(I know this varies by monster type, I would like an answer addressing them all)