Two Different Answers for the Same Simple Formula in Google Sheets

I have a spreadsheet with a very simple formula: =C4/D4Sometimes, this very simple formula gives the wrong value.

• Cell C4 contains the value 390062 formatted as a number with thousands separator

• Cell D4 contains a formula which evaluates to the value 444434 formatted as a number with thousands separator.

• • This is a =VLOOKUP() formula and the displayed value is correct.

• Cell G4 contain the formula =C4/D4 which is displayed as 28%

• • This is INCORRECT! The correct value is 88%

• If I add the same formula in Cell J4 I get the correct value.

• Result for =VALUE(G4) is 0.28

• Result for =VALUE(J4) is 0.88

Furthermore;

• If I change the formatting on cell G4, it updates to the correct value.

EDIT: I might have figured this out; cell C4 is part of a Pivot Table. Is that why it's not calculating correctly?If so, does anyone have a solve for this?