Use count on status_karyawan and then group by
select bk.branch_code,b.branch_name,count(bk.status_karyawan) from
biodata_karyawan bk join
branch b on bk.branch_code = b.branch_code
group by bk.branch_code,b.branch_name
Here is sql fiddle
Updated Query as per your comment
select p.branch_code,b.branch_name,count(bk.status_karyawan) from
biodata_karyawan bk join
branch b on bk.branch_code = b.branch_code
join privilege p on b.branch_code = p.branch_code
Where p.username = 'joko'
group by p.branch_code,b.branch_name
Update fiddle