Identifying Manual percentage on a control location

Hi Guys
This is probably easy but I’m a dull when it comes to Excel,
I would like to identify the percentage of manually priced and auto priced tickets for those sold in a six month period.
Auto priced tickets are designated by 0 & 2 while 1 & blank represent Manual pricing.

I would like to identify the percentage of manually priced tickets i.e. 1s & blanks together on a control location level on a single column.
Is can anyone help me come up with a certain formula for this?
Below is an example of how I want it to be (I added the last column manually)

DOCNUM SALDAT ISSLOCCO Control location FARPRCIND Manual percentage
071-7721717525 2-Jan-16 656229 600 2 50
071-9394835684 2-Jan-16 1320991 1320000 1 63.15789474
071-9772465176 2-Jan-16 1320995 1320000 0 63.15789474
071-9772466403 2-Jan-16 1320995 1320000 63.15789474
071-9772466407 2-Jan-16 1320995 1320000 1 63.15789474
071-7740216547 2-Jan-16 966757 600 50
071-9394835835 2-Jan-16 1320080 1320000 2 63.15789474
071-9394835857 2-Jan-16 1320080 1320000 0 63.15789474
071-9394835861 2-Jan-16 1320080 1320000 1 63.15789474
071-9772465938 2-Jan-16 1320081 1320000 1 63.15789474
071-7740216539 2-Jan-16 966757 600 0 50
071-9772466121 2-Jan-16 1320989 1320000 63.15789474
071-9772466123 2-Jan-16 1320989 1320000 2 63.15789474
071-7740216542 2-Jan-16 966757 600 1 50
071-9394835656 2-Jan-16 1320991 1320000 1 63.15789474
071-9394835684 2-Jan-16 1320991 1320000 1 63.15789474
071-9772465176 2-Jan-16 1320995 1320000 0 63.15789474
071-9772466403 2-Jan-16 1320995 1320000 63.15789474
071-9772466407 2-Jan-16 1320995 1320000 2 63.15789474
071-7740216545 2-Jan-16 966757 600 0 50
071-9772466056 2-Jan-16 1321001 1320000 1 63.15789474
071-9772466242 2-Jan-16 1321001 1320000 1 63.15789474
071-9772453824 2-Jan-16 1321007 1320000 0 63.15789474
071-9772453828 2-Jan-16 1321007 1320000 63.15789474
071-7740216543 2-Jan-16 966757 600 1 50