How do you do this?
If you are employing social media as a marketing tool, you should be measuring the results of your work. Although social media is often gratis, your time and endeavours are not. As a consequence, any social media program should calculate the value of its investment.
There are many areas to appraise that are more qualitative than quantitative, but here is a straightforward Social Media Measurement Matrix designed to accommodate a side-by-side comparison of social media accounts as well as effectiveness over time.
This matrix enables easy reporting from multiple sources and/or accounts for one company. This matrix is not all-embracing but can be expanded upon. Neither does it take into consideration the quality of engagement. This is only meant to be a simple tool to track performance across multiple platforms over time.
Let me know how it works for you.