Click on the visual and look under the Visualisation menu on the right of your screen. There is a paintbrush section where you will have the Toggle Option to display the Title or not. Expanding this there is an area called "Title Text" you can update.
Is that what you were hoping to change?
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The Values scetion for the line chart need to be aggregated. In your scenario, as you create a calculated clumn and place it in Values property, it will be set with one kind of aggregate function, eg: SUM. So the legned name is changed with that aggregate function.
I would suggest you to create a measure instead of the measure with below DAX:
then set Format as Percentage for this measure.
Best Regards, Qiuyun Yu
Community Support Team _ Qiuyun Yu If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.