Reply To: What causes the discrepancy in Google's reported Total Users?

[Alexander]

Unfortunately, without being able to analyze the content of your shared chart, it’s difficult to provide an accurate answer. However, one possible explanation for discrepancies like this often tends to be overlapping users. If there are users who are counted in both the first and second row of your chart, then they would be double-counted in your calculation, but Google may be accounting for this overlap and only counting these users once, which could lower the total.