Check range equals 100%

I'm putting a check into some code to make sure certain range, all the cells equal 100%

My code is as follows;

 'Check N&O rates are 100%
    If Worksheets("N&O Rates").Range("J3:J23").Value <> "100" Then
        MsgBox "Please populate the N&O Rates - macro stopped"
        Exit Sub
    End If

When i run the code i get an error of type mismatch?