I have a column in a table that needs to be populated from data in another table.

For example,

```
D1 = A3-A2
E1 = B3-B2
F1 = C3-C2

```

and so on.

Basically, I am unsure how to increment the subtraction by columns, and then drag it down along another column.

[![enter image description here](https://i.stack.imgur.com/59N7k.jpg)](https://i.stack.imgur.com/59N7k.jpg)