Dremel SQL: CASE WHEN 2 conditions return too many records

Question

I would like to return a rows that have a column which values are between 80 and 91.

Here's my query:

SELECT
  SUM(
    CASE 
      WHEN ROUND((offer_percent*100),1) > 90 THEN 1
    ELSE 0 END) AS MoreThan90,
  SUM(
    CASE 
      WHEN 80 < ROUND((offer_percent*100),1) < 91 THEN 1
    ELSE 0 END) AS LessThan90
FROM
  approval_state
WHERE
  id IN ($id)

and the output is:

MoreThan90 | LessThan90
1            10

I'm expecting then LessThan90 to return only 2 records but it returns 10, which is the total number of records in the table.

Any idea how I can 2 records for LessThan90 only?

Thanks