Donor Churn

Hello

Forgive me re-posting this but I'm not sure I used the right terminology the first time.

I would like to report on donor churn - movement in and out of memberships and up and down across levels. To answer questions like:

How many people gave in 2008 but not in 2009?

-       Which levels were they in?

-     What does the lost income = in dollars?

How many people gave more in 2009 than in 2008?

-       Which levels were they in?

-      What does this amount to in dollars?

How many people gave less in 2009 than in 2008?

-       Which levels were they in?

-      What does this = in dollars lost?


I know the NRR and Macro trends are involved in answering these questions but I'm not sure which reports to use.

Any help would be greatly appreciated.

Willa