I am trying to calculate running total for this year and last year. For example, assuming Jan-2020, cases are 20, and Feb-2020 cases are 50, total would be 70. Similarly, Jan-2019, cases 10, and Feb-2019, cases are 30, total would be 40. Having a hard time with this.
not sure I understand. My guess would be you need to calculate cumulative sum (using node @izaychik63 linked) for each row if you have data in format that you print screened. If not can you give example of input data and desired output?