Formula - Sum of field based on parameter date range minus 1 year

[jlr123]

I would like to have two columns in my report. One with sum of field for current date range (a parameter)
{?Invoice Date Range}(summary is based on ARhistoryextension (field) within grouping-which is in place already ). I need a column with sum of field for current date range minus 1 year also within grouping

Thanks for your assistance.