I have the following data set, some R code I generated to plot a 3-level nested pie-donut chart, and the resulting plot.

I want to make a simple pie chart but all the labels are pointing to the wrong segment. They labels seem to be mirrored or might have a faulty ypos. I understand that ypos means the position of the labels on the outline of the pie chart, but is there any way that I can mirror the labels in the graph?