Dear Mr. Babu
Both reports; Excel Report considering HITB product and HITB report (Activity > Historical Inventory Trial Balance), retrieve data from the exact same source which is SEE30303. Therefore, there should be no variance at all.
In order to further ensure the quality of the report, run a simple select statement on the SEE30303 table for a specific item, site combination and check both the quantity and cost total.
Your feedback is highly appreciated.