From the mysql documentation:
The declaration syntax for a DECIMAL column is DECIMAL(M,D). The ranges of values for the arguments are as follows:
- M is the maximum number of digits (the precision). It has a range of 1 to 65.
- D is the number of digits to the right of the decimal point (the
scale). It has a range of 0 to 30 and must be no larger than M.
So in your case: hit change
button there and in the Length/value column there should be: 11,2
with no parentheses or anything else when you hit save
In case you want to do it manually there's a discussion of it here: MySQL - How do I update the decimal column to allow more digits?
And here's the alter: ALTER TABLE YourTableName MODIFY COLUMN column_name DECIMAL(11,2);