ticker questions: Weight to Lose vs Weight Lost

I want to change my ticker to monitor how much weight i have lost to date.  How can I do that - where do i go?  I can't seem to find an option to make that change.  Thanks. :)

my OH-->health tracker-->tickers and widgets-->ticker tab--> left hand side of page fill out start weight, end weight, background and icon-->right hand side of the page click amount to go or amount  changed-->save

sorry your instructions are not correct -- after clicking ticker tab i do not get the option to fill stuff out.