Report access and the records inside a report depend on your role and organization scope.
Limited or assigned scope, permitted financial records, and applicable access restrictions can change the included records. A user who can open a report does not necessarily see every organization record.
Confirm the workspace, report permissions, access level, case assignments, and filters. Ask an administrator to review the specific requirement. Broadening a role simply to make totals match can expose records the user should not access.
When comparing two screenshots or exports, record whose permitted scope each represents as well as the report filters.