I'll refine my question to try to drive out the answer I need... can someone give me a SPL formula I can use to self calculate the percent complete. If I can get the formula, that will tell me the information I am trying to discover. My problem is my data model is at 55% complete and heading south every day.
i do not know the exact definition of this field. But for my experience, it says that in your case 80% of your configured summary range is accelerated (for example 32 out of 40 days).
If this value is not progressing, you might have to many running searches. The data model acceleration is driven by scheduled searches in the background. Can you check the management console for skipped scheduled searches?