- Add helper field [MoM helper] with formula
[Month]-1.
- Use lookup to add [Order count_lagged] referencing [Order count]; lookup condition: [Month] = [MoM helper]; aggregation: original value.

- MoM growth rate formula:
IFERROR(([Order count]-[Order count_lagged])/[Order count_lagged],"").
Function practice
Month-over-month growth rate
Scenario: calculate MoM order growth.
Scenario: calculate MoM (month-over-month) growth for orders.
Data: [Month] field: 1-12; [Order count] field.
Steps