I am trying to conduct a statistical test of the difference between two shares expressed in percentage points. While I could use a regular t test if the difference was between two means, with shares I am not sure what to use.
The specific example refers to protest events. I can calculate what share of the events have been organized by parties and what share have been organized by other organizations. I would like to know if the difference between the two is statistically significant.
In this literature relative shares are most commonly used. Means of absolute numbers are not very useful. I am grateful for any hints!