Label Percentages
label_percent(x, digits = NULL, trim = FALSE)A character vector.
A numeric vector.
An integer indicating the number of decimal places.
If NULL (the default), breaks will have the minimum number of digits
needed to show the difference between adjacent values.
A logical scalar. If FALSE (the default), values are
right-justified to a common width (see base::format()).
Other graphic tools:
circle(),
inch2line(),
label_auto()