Indexed Pages Reduced

I have a site I don't know whats happening .Fews days back the total crawled pages are 22,700 and this time its only 818.
Please advise me whats happening?

One thing few days back the layout of this site is totally changed but after changing the layout around 23,000 are indexed but this time only 818 pages showing indexing.

Please help me out in this.

 

mine hv same problem total 17,000 pages but now showing 826 pages indexed only may be it take time to index

 

i just had the blip also, recreated my sitemap and resubmitted and everyhting is creeping back up. i had to delete my old sitemap and resubmit through webmaster tools

 

may it problems with index of google

 

what about your ranking? the rank dropped.. I would assume the indexed pages will shrink accordingly

 

i have the same problem.

 

same here guys. I have seen decreased indexed pages on across the board on all our sites.