Discrepancy between followed links. How do you explain this?

[EcommerceSite]

My external followed links over time have gone from 346 in late November to 402.

Total external links have gone from 400 to 457.

Followed linking root domains dropped from 125 to 102 (How do I find out why?).

Total Linking Root Domains Over Time dropped from 152 to 126.

Linking C-Blocks dropped from 124 to 42.

How did I increase my links but drop the other stuff?

[modulusman]

I have noticed some similar trends in my numbers.

Did you note any change in DA or any of the MOZ trust numbers?  Mine have been wacky...

[EcommerceSite]

Those have been strange as well.