# Help with Lookups and Percentages from multiple worksheets in one workbook

#### Dan Wilson

##### Active Member
Good day all. I am running Excel out of Office365 (updated recently) on Windows 10 Home. I am the statistician for a club that makes several rides a year. The workbook contains 7 worksheets.
Rides - tracks all rides by date showing the number of riders, date of the ride, month of the ride, final status of the ride and the weekday of the ride.
Riders - tracks all members of the club showing name, membership status, total rides attended, month of membership and percentage of rides attended.
Presets - contains values used by other worksheets as constants.
The other four worksheets have no effect on this issue.

The problem is trying to calculate the percentage of attendance based on the number of months that the member was in the club for a fiscal year. Our fiscal year for ride attendance runs from December of the previous year through November of the current year. The legal fiscal year for membership in the club runs from January to December of the existing year. I have created a group of cells that computes the number of rides for each month. I have also created a group of cells that creates the number of rides for a combination of months. This particular group shows the total of rides for the period of Dec to Nov, Jan to Nov, Feb to Nov, etc, all the way to Nov to Nov. There now exists twelve numbers that can be referenced for a member allowing the percentage of attendance to be limited to the months of membership. Any member who rejoins the club in January is considered to have been a member in December of the previous year. I have used Count, Countif and Countifs to organize the totals in the three worksheets. I need help in using the number of rides attended in a given set of months of membership to get an accurate percentage of attendance based on the fact that the member was only able to ride a number of months for a fiscal year. It is unfair to create a percentage of attendance based on the total number of rides attended if the member only had access to less than twelve months of rides. I hope that I have explained the problem with enough detail. If you have any questions, please reply. As always, I appreciate any help on this issue.
Thank you,
Dan Wilson...

### Excel Facts

Why are there 1,048,576 rows in Excel?
The Excel team increased the size of the grid in 2007. There are 2^20 rows and 2^14 columns for a total of 17 billion cells.

#### Dan Wilson

##### Active Member
Good day all. Please disregard this entry as I have cured the problem. I appreciate anyone who worked on this one.
Dan Wilson...

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