Match selected number in same table column

VD , best is you have an independent batch table and create a measure like this and add this with all un summarized columns  in a table visual

measure =
var _max = maxx(allselected(Batch_Number),Batch_Number[Batch_Number])
return
calculate(count(Table[Batch_Number]), filter(Table, table[parent_order_number] = _max))

or with same table batch_number as slicer 

measure =
var _max = maxx(Table(Batch_Number),Table[Batch_Number])
return
calculate(count(Table[Batch_Number]), filter(Table, table[parent_order_number] = _max), removefilters(Table[Batch_Number]) )

refer Need of an Independent Table in Power BI: https://youtu.be/lOEW-YUrAbE