Thanks for checking in! I just got off a call with our devs who are behind these graphs and they are still investigating this. They have a more narrow focus now and should have something for us tomorrow. I'll keep you posted on what I find out!
Thank you again for your patience while this is being investigated. Our engineers are going to work on resolving this discrepancy in the total usage sums between the historical and donut graphs. I don't have an ETA on when this will be addressed, so in the meantime, I suggest relying on the donut graph, and for more detailed tracking, you could also try what Gabe mentioned, GlassWire.
Your post has mobilized a lot of folks over here to address this, so thank you for bringing this to our attention so we can make these tools work for you!
Appreciate the reply. I have been monitoring using Glasswire, still think the cumulative is high based on what I see with the usage. The only thing we have connected to the network are our computers. Phones are not connected, we are not big streamers, and if we do we stream through our phone data plan not internet connection.
Have you installed Glassware on all your computers? Glassware only measures what's used by the device it's installed on.
Make sure to set your Glasswire options to "Incoming & Outgoing" and "External". The former so it tallies both download and upload and the latter so it tallies only the data going through the network adapter (External (i.e. HughesNet)) rather than including data that's being transferred back and forth internally (Local).