We've recently made a change to how the numbers are generated on the overview tab. Now, they are counting "People" instead of "Check-ins."
Here's an example on why we made this change. If three people checked in three times, the old dashboard would have the number 9 on it because it was counting "check-ins." However, that's not the information that most people want. Instead, that number will show 3, as that is the amount of people that came to that session.
This is affecting all of the numbers on the dashboard, including the percentages of people checked out, and the numbers on the time and locations sections.
Now all of the numbers on the Events page refer to people who have checked in, except on the “Check-ins” tab which counts each check-in separately.