Do not be alarmed. This is actually an expected behavior. The Ranking Areas – Standard Geography – Customers report only lists geographies that contain customers, so while the % column will always sum up to 100%, that will not necessarily be the case for the Base % column. The Base % column is factoring in all those geographies where no customers are present and are absent from the dashboard. For example, if the Base % column adds up to 44%, the report is basically saying that ~56% of the households in this trade area are found in the component geographies (CSDs for example) where no customers are present.