With this you can quickly get an overview of historical data for the change of the respective day.
Important: the market closing price is always used for the calculation and not the pre/post market price.
The label with the change value is always placed above the first opens regular market bar. If the change is positive, the label is draw with a green background, is the change is negative you will have a red background.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.