If an investment has decreased in price, then that is a reduction of par or stated value of stock. If the stock has not decreased in value, par or stated value of stock is the same as the current market price.
Par or stated value of stock is the amount an investor would expect the stock to go up in the future. If a stock has decreased in value, then par or stated value of stock would be the stock’s current market price.
Some investment styles don’t follow this rule. A person with a high beta might buy a stock that just went up, or a person who’s in a position to buy or sell stocks at a profit might sell a stock that went down.
The stock will look different if you remove the par or stated value of stock. It is the price of a given stock that is the difference between the current market price and the price of the stock you bought.