Highest Salaries Difference

None

Example Testcases:

{"headers": {"Salaries": ["emp_name", "department", "salary"]},"rows":  {"Salaries": [["Kathy","Engineering",50000],["Roy","Marketing",30000],["Charles","Engineering",45000],["Jack","Engineering",85000],["Benjamin","Marketing",34000],["Anthony","Marketing",42000],["Edward","Engineering",102000],["Terry","Engineering",44000],["Evelyn","Marketing",53000],["Arthur","Engineering",32000]]}}