Dear Satyadhanyasi,
To monitor the effectiveness of the department, costs or ratios associated with department are identified. There are so many ratios for each department. However, which ratios to consider depends on the nature of the business of your company.
In fact what were one time internal controls, have been merged with the PMS and each HOD has been made responsible for managing cost or ratio for his/her department.
This is a very exhaustive job. To measure certain ratio or cost, you need to first start developing that kind of MIS. Sans this data, how can you measure it? Accuracy of the costs or ratios also matter. For further information, feel free to contact me on my mobile.
Thanks,
Dinesh Divekar