How to get final result by subtracting all row values of a single column of a Sql table

I have a amount column in my table.

How can I subtract in an ascending order i.e(22-16-4) based on date and get final result : 2

>Solution :

Here is a working query for SQL Server:

SELECT TOP 1 val - SUM(val) OVER (ORDER BY val
                                  ROWS BETWEEN UNBOUNDED PRECEDING AND
                                  1 PRECEDING) sum_val
FROM yourTable
ORDER BY val DESC;