Line chart Y-Axis is duplicating values

I have this following measure :

Marge =
CALCULATE(DIVIDE (
SUM( FCTVentes[prix_vente] ),
SUM( FCTVentes[prix_achat]),0),
USERELATIONSHIP(dim_calendrier[id],FCTVentes[fk_date_vente]))

The result is a percentage formatted like below :

When I try to create to LineChart with a year filter like below :

I see that the Y-axis is duplicating values when the 2020 year is selected.

When selecting the year 2021 also, it is the same :

Also, I want that the Y-axis starts from 0 (the display), even if there is no data with 0%.