State tax filing

If I report net sales of $742 (from CA and craft sales at conventions in OR and PA) on my 1040 Sch C line 31, where can I split up the income between the CA, OR, and PA when filing state tax returns (e.g., $292 from net sales in CA - my domicile; and out-of-state craft fairs I sold at in OR ($250) and in PA ($200)? My CA Sch C and worksheet takes the entire $742 from the Federal Sch C. Should I override the Sch CA column B and do the same override for OR and PA tax returns? Thanks.