This function performs the same data transformation as
position_fill, but is normalized to 100 instead of 1.
position_fillpercent(vjust = 1, reverse = FALSE)Vertical adjustment for geoms that have a position
(like points or lines), not a dimension (like bars or areas). Set to
0 to align with the bottom, 0.5 for the middle,
and 1 (the default) for the top.
If TRUE, will reverse the default stacking order.
This is useful if you're rotating both the plot and legend.