title: Give sum with reference
body: <p>What formula for all target  columns value needs to sum and need to get in total target columns with sum value but when I change a value in target columns that total target columns of sum is not showing correct value. For ref. Look at the image.<a href="https://i.stack.imgur.com/ruOTz.png" rel="nofollow noreferrer">enter image description here</a></p>