On: 2019 Stack Overflow Developer Survey Results

[the_arun]

When we say percentage - the numbers are not adding up to 100. How are we supposed to read this report?

[_qwfv → the_arun]

Typically this indicates a multiple choice question, e.g. Choose the languages you are comfortable programming in.

Then the percentage indicates the number of respondents who selected that / the total number of responses.

[trymas → the_arun]

Multi answer questions in the survey may explain that?

[the_arun → trymas]

I see. One way of calculating % in multiple choice is ((total No. of C likers)/ total count of answers) * 100 to get % of popularity of C.

[fxfan → the_arun]

You can just add all the percentages and divide by that number and you'll get the number you're talking about.

[andy_adams → the_arun]

Respondents are allowed to choose multiple answers for each question, so the totals != 100%.