Problem about filter

On Looker, I created a period filter that compares with the same period last year.
However, I would like to include a graph in this report that does not take this comparison into account.
Example: I inserted a KPI = 368 (-3.5% compared to the previous period). Next, I would like to insert a trend graph showing both periods rather than just one.
Thank you.

You can use grouping for this!

By default, a filter control applies to every chart on the report. But if you group that control with one or more charts, then it will ONLY apply that that chart, and not other charts.