Database
[{"Barcode":"A32352","Product":"Mixer Grinder","Category":"HA","Quantity":3,"SalesPrice":2999,"CostPrice":1897,"SalesTotal":8997,}]
Query
db.collection.update({Barcode:"A32352"},[{$set:{Quantity:{$subtract:["$Quantity",2]},SalesQuantity:{$add:[{$ifNull:["$SalesQuantity",0]},2]},Profit:{$subtract:["$SalesPrice","$CostPrice"]},SalesTotal:{$add:["$SalesTotal",{$multiply:["$SalesPrice",2]}]}}},{$set:{TotalProfit:{$add:[{$ifNull:["$TotalProfit",0]},{$multiply:["$Profit",2]}]}}}],{upsert:true,returnOriginal:false})