How to decrease Content DB Size

If your content DB size is more than its actual size then you have to remove items from your Recycle Bin.

Once you remove your item from Site Action -> Recycle Bin it will transffered to Admin Recycle bin. You have to remove it from there also.

http://yoursite/_layouts/AdminRecycleBin.aspx?View=2

Once you removed your data from here now see the size of your content db. Its reduced now.

Thanks.