Private Function PercentVerify()
    ' Test the Percent function.

    Debug.Assert Percent(50, 100) = 50
    Debug.Assert Percent(2, 100) = 2
    Debug.Assert Percent(100, 100) = 100
    Debug.Assert Percent(200, 100) = 200

    Debug.Assert Percent(50, 50) = 25
    Debug.Assert Percent(2, 50) = 1
    Debug.Assert Percent(100, 50) = 50
    Debug.Assert Percent(200, 50) = 100

    Debug.Assert Percent(-50, 50) = -25
    Debug.Assert Percent(-2, 50) = -1

    Debug.Assert Percent(100, -50) = -50
    Debug.Assert Percent(200, -50) = -100

    Debug.Assert IsNull(Percent(Null, 3))
    Debug.Assert IsNull(Percent("Joe", 3))
    Debug.Assert IsNull(Percent(3, Null))
    Debug.Assert IsNull(Percent(3, "Joe"))

End Function