The numbers and totals found in the accounting report may differ from what is found on the Statistics page for the same period.
The reason for this is that the accounting report shows the sales made within the chosen date range, while the statistics page shows the value of stays occurring within that same date range.
For example, a seven nights stay on August 3-10, might be paid on the check-out date of August 10. That booking will not be included in the accounting report for August 1-9, since the sale occurred on August 10. However, the value of that booking would be included in the statistics for August 1-9, since the actual stay was on those dates.