How to calculate automatically and graphically the percentage of two level of price in Amibroker.

[⭐ Atomo12345]

I find recently that in Amibroker 6.35.1 you can calculate automatically and graphically the percentage of two level of price.
Simply click on Trendline. You put the trendline on the tow points that you have interested, and the result is the percentual of the gain or retracement and the period in bars.
Greeting.
Have a good Sunday.

[⭐ option trader]

pls be prepare any short video about it./?

it will help us more understandable..