Sub Calcul()
Application.ScreenUpdating = False
Dim HI, LO, Dif, L
HI = [G3]: LO = [G4]
[D3] = [C3] - [C1]: [D4] = [C4] - [C2]:
For L = 5 To Range("A65500").End(xlUp).Row Step 2
Dif = (Cells(L, "C") - Cells(L - 2, "C") + Cells(L + 1, "C") - Cells(L - 1, "C"))
Cells(L, "D") = Dif * HI
Cells(L + 1, "D") = Dif * LO
Next L
[A:D].Interior.Color = xlNone
Ligne = Application.Match(Application.Max([A:A]), [A:A], 0)
Range("A" & Ligne & ":D" & Ligne + 1).Interior.Color = RGB(255, 255, 0)
End Sub