How we can measure the effectiveness to the recruitment agencies and recruitment websites?

thank you for the invite I agree with mr ibrahim adawi

Effectiveness for the both the categories lies in ROI i.e the bottom line. 

One need to have a tracker, which traces how many candidates got "Shortlisted", "Offered", "Mobilized" and "Joined". 

You need to then give weightage to each of the above parameter and then we can decided how each o the sources performed i.e. "agencies" or "Website".

For Agencies, we can one more criteria "Time to respond". 

One would be urged to add "Quality of CV' parameter, but I would not add them here as it is mostly a perspective and cannot be measured. But if you have a strong measuring criteria for this parameter, please go ahead and add them. 

Most recruitment agencies when they provide staff are usually highly efficient, and the company is given a probationary period of one month.