creating column from count of previous value

[LuciaS1]

Hi! 

I want to create column in power query. It is count of previous value from new column / Rate . In first cell we need to strart with 1 as previous value and then continue with privious values. 

Is there some wax to create this column in power query .

Thank you !

[Jakinta · Accepted solution]

Hi, please take a look to steps below.

The result:

[LuciaS1]

@Jakinta  Thank you !