He plays in an off tuning, but this is the right progression.
[Verses]
Eb Bb Eb Bb
As I’m getting older, chip up on my shoulder
Eb Bb F Bb
Rolling through life, to roll over and die
Eb - Bb - Eb - Bb - Eb - Bb - F - Bb
Eb Bb Eb Bb
Missing hippy Jon, salad days are gone
Eb Bb F Bb
Remembering things just to tell ‘em so long
Eb - Bb - Eb - Bb - Eb - Bb - F - Bb
Bb Gm Dm F
Oh mama, actin’ like my life’s already over
Bb Gm Dm F
Oh dear, act your age and try another year
Eb Bb Eb Bb
Always feeling tired, smiling when required
Eb Bb F Bb
Write another year off and kindly resign
Eb - Bb - Eb - Bb - Eb - Bb - F - Bb
Eb Bb Eb Bb
Salad days are gone, missing hippy Jon
Eb Bb F Bb
Remembering things just to tell ‘em so long
Eb - Bb - Eb - Bb - Eb - Bb - F - Bb
Bb Gm Dm F
Oh mama, actin’ like my life’s already over
Bb Gm Dm F
Oh dear, act your age and try another year [x2]
Source: https://tabs.ultimate-guitar.com/tab/mac_demarco/salad_days_chords_1739267