How would you reverse the sort? So big to small Javascript code example

Example 1: javascript sort array of ints

function sortNumbers(a, b) {
  return a - b;
}
var ages = [12, 95, 43, 15, 10, 32, 65, 78, 8];
ages.sort(sortNumbers); //ages is now sorted low to high
//console.log(ages); [8, 10, 12, 15, 32, 43, 65, 78, 95]

Example 2: javascript sort function

var points = [40, 100, 1, 5, 25, 10];
points.sort((a,b) => a-b)