CMMC controls met (%)

count(status='met') / count(*) * 100

select case
        when count(*) = 0 then null
        else round(100.0 * count(*) filter (where cs.status = 'met') / count(*), 2)
      end as value
      from controls c
      left join control_status cs on cs.control_id = c.id

• non_nullValue must be set when controls existerror
• rangePercent must be in [0, 100]error