grouping records sequentially

Hello All,

I have a dataframe that contains two columns (id (number), has_data(boolean)). Is there a way in R where I can take each 10 records at a time and calculate the percentage of those records containing has_data=true?

For example,

records 0,10 contain 3 false , 7 true or 70%

records 11,21 contain 5 false , 5 true or 50%

thanks in advance.