I would like to ask opinion on what to put at career summary section in resume. I did read some example and suggestion online. Most of them suggested to put some sort of percentage of cost saving, reduction, some value to show your achievement like cutting production cost by 30%, reduce downtime by 20%, etc

Problem is i never did report or keep data for something like this. i did made improvement like introducing work flow, procedure and documentation for ISO, but never calculated how much positive impact it gave to company..