(6/40)*100% = 15%. Wendell was responsible for 15% of the sacks.
If you mean Brady dropped back and only 1% of the time he was sacked due to Ryan Wendell, the sheer meaninglessness of that should be apparent to you. I'm certain I've seen you in other threads citing sacks as overrated, pressures as more important - and rightfully so. Not to mention it disregards all the plays that Brady got it out quick, got it off under pressure, or threw it away in time, etc., etc...Come on, Ken, that number doesn't mean anything, it's not compared to any other linemen, it reveals nothing.
I don't like to use PFF, and could care less of their grading, but the answer to your hurries question is here - and its probably hard for even PFF to screw that up (assuming it came from them):
Report: Ryan Wendell's deal with the New England Patriots is worth $4.55 million | masslive.com
So there, stats said he struggled, too. Wendell didn't pass the eyeball test last season, IMO - and the opinion of many posters on this forum I respect. Yates, a very objective guy with experience scouting, cited the struggles. Wendell received no other interest in free agency and signed a deal that pays him in the bottom third of centers in the league.
We previously thought he was being paid like a top third center in the league. Which didn't make sense. Fortunately, it's not the case.