Calculating stats for multiple choice answers.

[John Maris]

My problem might be simple but i really don't know if google charts api calculating it the right way.
I have a question with multiple choices and I want to create a bar chart with the answers.
I'm returning a datatable from my webservice to the visualization, with the sum of each answer.
A snapshot from the json:

{"cols":[
           {"id":"choice","label":"Question","type":"string"},{"id":"sum","label":"Summary","type":"number"}
          ],
"rows":[
          {"c":[{"v":"Answer 1"},{"v":11}]},
          {"c":[{"v":"Answer 2"},{"v":16}]},
          {"c":[{"v":"Answer 3"},{"v":12}]},
          ]
}

The percentage for each answer is calculated in conjunction with the total answers number by the visualization api? ( Answer / total number of answers )
Is this the right way? Doesn't have to be calculated in conjunction with the total users answered the question?

[asgallant]

I'm not quite sure what you are asking here; the bar charts have nothing to do with percentages.  If your numbers represent percentages, then it is encumbent upon you to make sure they are calculated properly.