android: Stored Images in SqLite is taking 2x more space

I want to store jpg images in a SqLite database and I am using this code to convert bitmap to array of bytes.

            public static byte[] getBitmapAsByteArray(Bitmap bitmap) {
                ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                bitmap.compress(CompressFormat.JPEG, 100, outputStream);       
                return outputStream.toByteArray();
            }

the issue that image take more than 2x of it's size in database