Okay, so there is very handy tool made by @shaunmza that helps you know all mentioned things in title. 

<center><a href="https://i.imgur.com/uwGeR2i.png"><img src="https://i.imgur.com/uwGeR2i.png"></a></center>

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Head over to: https://steem.makerwannabe.com ... and you will see this home page. 

<center><a href="https://i.imgur.com/OJR39be.jpg"><img src="https://i.imgur.com/OJR39be.jpg"></a></center>

I am more interested in first one, let's check out the stats of Jerrybanfield. Ready.. Set... Go.. 

<center><a href="https://i.imgur.com/YGeYBdc.jpg"><img src="https://i.imgur.com/YGeYBdc.jpg"></a></center>

<center><sub>Chart For Quick Overview - Unfollows were quite a lot in last few days</sub></center>

For individual stats you can scroll down. 

<center><a href="https://i.imgur.com/It5CUwE.jpg"><img src="https://i.imgur.com/It5CUwE.jpg"></a></center>

You can select timeframe as well, default is 30 days. 

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<center><a href="https://steemit.com/@libert"><img src="http://fs5.directupload.net/images/170722/9378j9md.gif"></a></center>