Sort ( desc )list view item

Question

Hi,

 

I have list view where ,placed counted item formula which shows counts of item

 

Requirements:

 

document library , i want to show top 5 user;s who created document maximum

i have a lookup column which stores user id ( based on user list ) .on this look up column i have applied group by

which is worknig fine besides group by i want to show count of it

It means it tells me who uploaded/created document most.

i have also placed count item formula successfully ,

 

Solution Required :

Based on count i want to make sorting (desc ) ,How can i do this ?

Thanks