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 table_1636 ( "Period" text, "% trains arriving within 5 mins of scheduled time (over three months)" text, "Change over same quarter the previous year" text, "% trains arriving within 5 mins of scheduled time Moving Annual Average (MAA)" text, "Change over previous year as a whole" text )

### Question ###
What's the change over same quarter the previous year in the period when the 89.6% of the trains arrive within 5 minutes of scheduled time (over three months)?

### Accurate SQL ###

SELECT "Change over same quarter the previous year" FROM table_1636 WHERE "% trains arriving within 5 mins of scheduled time (over three months)" = '89.6%'