Indsætte beregnede værdier i et DataGridView

Ja:

Function UpdateGrid(ByVal dgv As DataGridView) As DataGridView
        dgv.Rows(1).Cells("Kontonummer").Value = 55
        dgv.Rows(1).Cells("Kontonummer").Style.BackColor = Color.Red
        Dim n As Integer
        For n = 0 To dgv.Rows.Count - 1
            dgv.Rows(n).Cells("MBal").Style.BackColor = Color.Red
            'dgv.Rows(n).Cells("AaBal").Value = Round(dgv.Rows(n).Cells("AaBal").Value, 1)
            dgv.Rows(n).Cells("AaBal").Value = Round(dgv.Rows(n).Cells("Aarssaldo").Value * 100 / dgv.Rows(n).Cells("TotalBudget").Value, 1)
        Next
        Return dgv
    End Function