Percentage Change: -5% < Percentage Change < 5% - is this the same as 'change from open'?

The phrase "Percentage Change: -5% < Percentage Change < 5%" is not the same as "change from open." While both measures pertain to the percentage change in a stock's value, they refer to distinct concepts and contexts.

1. **Percentage Change**: This term generally refers to the rate of change in a stock's price or value over a specific period, expressed as a percentage of the original value. It is a broad indicator of the direction and magnitude of change in the stock's price. The formula for calculating percentage change is:[(Final Value - Initial Value) ÷ Initial Value] × 100.
2. **Change from Open**: This specific phrase indicates the percentage difference between a stock's current price and its opening price for the trading session. It is a measure of how much the price has changed since the market opened. The formula for calculating change from open is: [Change from Open = (Close price of the current bar – Open price of the current bar)] and [Change from Open % = (Change from Open / Open price of the current bar) × 100].

In summary, while both measures can be used to analyze stock price movements, "percentage change" is a more general term that can refer to changes over any given period, whereas "change from open" specifically measures the change between a stock's closing price and its opening price for the same trading session. The latter is particularly useful for assessing short-term price movements and volatility around the opening of the market.