Vue (Element UI) build select with loop percentage

Hi all developers,

I'm build current project with Vue - Element UI buy need your some help by create "Select" with loop percentage from 0 > max value number from JSON data

*** PLEASE READ HERE FIRST ***
I NEED SOME DEVELOPER READY TO WORK AND UNDERSTAND THIS

My target to build 2 select connect between for like

Select 1: Our Percentage
Select 2: Give Percentage

This is example data
{"platforms":[{"id":1,"product":"Shirt","value":90},{"id":2,"product":"Mask","value":90}]}

1) for "Select1" and "Select2" should be loop from 0 > 90
2) Our percentage will be always default value = 0
3) Give percentage will be always default value = 90

Result: When click select option for "Select1" for 2% "Select2" will be automatic change to 88%


P.S.1) Please see example in Upload files
P.S.2) This is my current code https://pastebin.com/qchnXtW4

Just see area in prop "your_pt" and "give_pt" this is i code 2 both select area