percentage of total count grouped into buckets

I have a list of article IDs and their corresponding article view counts for a given day. I want to see what percentage of articles are viewed between 1-50 times per day, 51-100 times per day, 101-150 times per day, 151-200 times per day and then >201 times per day. ( I may want to further configure these buckets later) My basic query to get the article ID and count is attached. sourcetype=200000747_ivu_access|where id !="" and UserName!="-"|lookup ECCOUser.csv ADSID as UserName OUTPUT Country Department Organisation | lookup ArticleDetails.csv ArticleID as id OUTPUT ArticleTitle|transaction UserName maxpause=30s| stats count(id) as ArticleCount by id |sort ArticleCount desc Many thanks for any help, I am struggling with this one.