As you said Melissa, we didn’t really have much insight to the business - I certainly would have needed to ask more questions if I got this from a client.
My take on damaged packages versus returns was this - the company I work for receives packages from a Wholesale Company (not from warehouses allover the US - just the closest three
)
And the packages are received in the very early morning (3am) by a single person. He does check for package damage, but does not open the packages to inspect the contents. Some packages may be damaged, while the internal product may be just fine and does not need to be returned.
So for us, returns don’t tend to happen on the same day as delivery.
Also, we may have returns for undamaged product - and in those cases it’s because our customer changed their mind about the purchase (either due to the product not being correct for them, or because they cancelled the order after we had submitted it to the warehouse).
Just an example of how you can have 13% of undamaged packages to return. 
I like the simplicity of your color scheme, one thing I always try to do is not let the background ‘steal’ the spotlight. Yes, I want my users to have a good response to the report, but I don’t want them to think about it being due to the colors/background used.
Definitely going to have to borrow your dynamic title usage - I rarely consider including the total value in the title, but I like the effect you have here.