An upper class person might spend on one outfit what a middle class family would spend for the year.
Upper class has help come in daily if not live on site where as middle class might have help occasionally and many times the help is a teenager trying to make a few dollars.
Upper class earns enough interest which could support at least one middle class family to live comfortably on while a middle class does earn interest but the interest(and accounts) would not support the family for long if laid off.
Upper class usually owns a successful large business where as middle class works for someone else or is building a business.