I add a new view and i want add arrow in this views.
Use arrow to show the change?
Like this picture.
How to do this?
If you want that exact setup you are going to have to ditch simple xml and go to advanced xml or use the app framework. Couple together with some custom css. Sideview app may get you most of the way there.
You can do it with a singlevalue field.
If you use range at the end of your search, categorising it into three categories, dropped, same or increased, then the singlevalue will gain an extra class. You can then use css to set the appropriate styling, such as an upwards or downwards arrow.
Let me know if you need a more thorough description