Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE member_attendance ( Member_ID int, Performance_ID int, Num_of_Pieces int )
TABLE: CREATE TABLE member ( Member_ID text, Name text, Nationality text, Role text )
TABLE: CREATE TABLE performance ( Performance_ID real, Date text, Host text, Location text, Attendance int )

### Question ###
How many performances of each location? Show me the proportion using a pie chart.

### Accurate SQL ###

SELECT Location, COUNT(Location) FROM performance GROUP BY Location