changing the y axis label of a bar plot to “percentage” in ggplot2

Question

I changed the y axis to percentages using the following code:

require(ggplot2)
require(scales)

p <- ggplot(mydataf, aes(x = foo)) +  
geom_bar(aes(y = (..count..)/sum(..count..))) + 
scale_y_continuous(labels = percent_format())

That helped, but the label is now: (count)/sum(count)
and I want it to be: percentage

Any suggestion? Thanks.

Answer 1

library(scales)

p + scale_y_continuous(labels=percent)

That should do it.