Label73's caption is '0', so you are dividing by zero here:
Me.Label75 = Label56.Caption / Label73
Me.Label75 = Format(Label75, "0.0%")
Me.Label77 = Label57.Caption / Label73
Me.Label77 = Format(Label77, "0.0%")
Me.Label78 = Label58.Caption / Label73
Me.Label78 = Format(Label78, "0.0%")
Me.Label79 = Label59.Caption / Label73
Me.Label79 = Format(Label79, "0.0%")
Me.Label80 = Label60.Caption / Label73
Me.Label80 = Format(Label80, "0.0%")
Me.Label81 = Label61.Caption / Label73
Me.Label81 = Format(Label81, "0.0%")
Me.Label82 = Label62.Caption / Label73
Me.Label82 = Format(Label82, "0.0%")
Me.Label83 = Label63.Caption / Label73
Me.Label83 = Format(Label83, "0.0%")
Me.Label84 = Label64.Caption / Label73
Me.Label84 = Format(Label84, "0.0%")
Me.Label85 = Label65.Caption / Label73
Me.Label85 = Format(Label85, "0.0%")
Me.Label86 = Label66.Caption / Label73
Me.Label86 = Format(Label86, "0.0%")
Me.Label87 = Label67.Caption / Label73
Me.Label87 = Format(Label87, "0.0%")
Me.Label88 = Label68.Caption / Label73
Me.Label88 = Format(Label88, "0.0%")
Me.Label89 = Label69.Caption / Label73
Me.Label89 = Format(Label89, "0.0%")
Me.Label90 = Label70.Caption / Label73
Me.Label90 = Format(Label90, "0.0%")
Me.Label76 = Label71.Caption / Label73
Me.Label76 = Format(Label76, "0.0%")
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