this formula should be one but in real world the market with fiat money is more profit if this is major that one. another way if is down of one is better operate in cripto market with btc as standard. If you in top or maximo value this is best day for call or sell, as color candle tell you, in fiat market. then if you in minimum value this is the beste moment to sell or call , see the color of candle, in cripto market.