Business Days Elapsed=FLOOR(ROUND(((TO_CHAR({custworkflow_tdy},'J') - TO_CHAR({custworkflow_frst_bsns_day_of_mnth},'J')))+MOD(({custworkflow_tdy}- {custworkflow_frst_bsns_day_of_mnth} ) ,1) - ((((TRUNC({custworkflow_tdy},'D'))-(TRUNC({custworkflow_frst_bsns_day_of_mnth},'D')))/7)*2) - (CASE WHEN TO_CHAR({custworkflow_frst_bsns_day_of_mnth},'DY')='SUN' THEN 1 ELSE 0 END) - (CASE WHEN TO_CHAR({custworkflow_tdy},'DY')='SAT' THEN 1 ELSE 0 END),2))