Patna: The Bihar cabinet on Friday came out with a formula for the career advancement of lakhs of government employees, which has been on hold because of a Supreme Court stay on reservation in promotions. According to the formula approved at a cabinet meeting headed by Chief Minister Nitish Kumar, promotions will be effected in 83 per cent of the posts in every cadre and a study will be conducted to find out how many beneficiaries belong to Scheduled Castes and Scheduled Tribes.