Ashton comes in for Jack Nowell, who drops to the bench, while Underhill is at openside flanker in place of the injured Tom Curry.
Nowell’s selection in the 23 means that there is no place for Manu Tuilagi, while Jones has also left out Zach Mercer, with Courtney Lawes coming into the squad.
Jones said: “The expectation for Saturday is no different to any other Test match. We want to be at our best, better than we were in the previous Test match and we want to play with pride and passion which ignites the fan.
“It’s been a good week, the players have recovered well, trained well on Tuesday, exceptionally well on Wednesday and we look forward to the challenge of taking on New Zealand on Saturday.
“The crowd last week was wonderful, we had great support and enthusiasm for the game and they saw a great Test match and I’m sure on Saturday they will see another.”
England: 15 Elliot Daly, 14 Chris Ashton, 13 Henry Slade, 12 Ben Te’o, 11 Jonny May, 10 Owen Farrell (cc), 9 Ben Youngs, 8 Mark Wilson, 7 Sam Underhill, 6 Brad Shields, 5 George Kruis, 4 Maro Itoje, 3 Kyle Sinckler, 2 Dylan Hartley (cc), 1 Ben Moon
Replacements: 16 Jamie George, 17 Alec Hepburn, 18 Harry Williams, 19 Charlie Ewels, 20 Courtney Lawes, 21 Danny Care, 22 George Ford, 23 Jack Nowell
Date: Saturday, November 10
Venue: Twickenham, London
Kick-off: 15:00 GMT
Referee: Jérôme Garcès (France)
Assistant Referees: Jaco Peyper (South Africa), Marius Mitrea (Italy)
TMO: Marius Jonker (South Africa)