Calculate the percentage return from one monthly gold price to the next and optionally translate the price move into profit or loss for a chosen holding.
For a simple price return, the beginning price is the reference base. Optional holding profit multiplies the price movement by your entered gold amount.
A monthly return describes one month. It should not be treated as an annualized performance rate unless you intentionally compound a sequence of monthly returns.
Use the same quotation basis for both endpoints. A change in currency, unit or price definition can contaminate the percentage return.
Yes. A lower ending price produces a negative monthly return.
Yes, but your actual investment result can differ because of your entry price and transaction costs.
No. Enter the two monthly observations yourself.