Hit Recovery Frame: 8/ 7/ 6/ 5/ 4/ 3/ 2/
Paladin: 0%/ 0%/ 0%/ 0%/ 0%/ 32%/ 152%/
Barbarian: 0%/ 0%/ 0%/ 0%/ 26%/ 86%/ NA/
Amazon/Assassin: 0%/ 0%/ 0%/ 20%/ 63%/ 200%/ NA/
Druid/Necro: 0%/ 0%/ 18%/ 48%/ 125%/ NA/ NA/
Sorceress: 0%/ 15%/ 39%/ 86%/ NA/ NA/ NA/
Here is the link to the chart, just in case this one didn't show up clearly enough for anyone.
http://www.diabloii.net/faq/pvp.shtml
Just click on the "Are there any general formulas I should know about" section at the top.
There are also other great tables in there, like what cast rate Necros need for different frames, same for Sorc, and attack speeds for every bow and what is needed to max shooting, etc.