Go to Marg Software ==> Click on Reports Menu==>- Management Report ==>Utilities==>Item Master Multi Editing==>click on accept=>all item show =>press enter for all /selected item ==> Rep.min.level with purchase upto x % if 0)-yes than date and % of Purchase=>Select==>yes==> first define date upto & then define  % on the basis of  Purchase QTY
Go to Marg Software ==> Click on Reports Menu==>- Management Report ==>Utilities==>Item Master Multi Editing==>click on accept=>all item show =>press enter for all /selected item ==>  Rep.min.level with sale upto / days if 0)-yes than date and % of Sale Select==>yes==> first define date upto& then define the % on the basis of Sale QTY