I had a 40% reduction, but upon further investigation my clicks per day have gone to the exact same level as on the day of the March 12th update. I think it's a roll back for them to fix the indexing issue they had, probably no other way for them to fix it. So what I think is hapenning is all the links from March until now have not yet been processed and added into their link map/algorithm. So probably more newer and up and coming websites have been more affected. my 2 cents

