How do you find the average of percentages?
Just like any other average. See below for an example:
We do averages with percentages just like we do with other numbers.
Let's say we decide to do a study of pepperoni pizza at the 5 pizza local parlors. We ask each place to estimate the percentage of orders that are pepperoni and we record them (I'll just make them up):
The average is the sum of the values divided by the count. We can sum the values using their percentage value (like 25%), or their decimal value (like 0.25) - we just need to be consistent. I'll do it in percentages: