How to calculate the rise and fall of stocks?

Formula: Increase or decrease = (today’s closing price – yesterday’s closing price) / yesterday’s closing price * 100%.

For example, today’s closing price of 000999 Sanjiu Medicine is 15.51 yuan, yesterday’s closing price was 15.53 yuan, a decrease of 0.02 yuan, and the decrease was: -0.13%

The current trading rules are generally for stocks. The maximum price limit for each trading day is 10%, 5% for ST shares, and other special regulations such as the first day of listing of new shares.

The latest transaction price (or closing price) of the current trading day is compared with the closing price of the previous trading day. This value is generally expressed as a percentage. If the latest transaction price of the day is higher than the closing price of the previous trading day, it is positive; if the latest transaction price of the day is lower than the closing price of the previous trading day, it is negative.

Reference materials: Baidu Encyclopedia