I submitted the following as a question to a recent Cool Solutions article,
and they replied that you might be able to answer...

For the Memory Changes report, it shows increases and decreases in
installed RAM. I only want to see DECREASES in the amount of installed RAM.
How do we do that? I've dug through the process of creating a custom
report, and I can't find a way to say 'Old RAM value" > 'New RAM value'.
Can ya'll help?