Zero thrust (±12% Garret D228, ±10% PW F50) (Can usually be accurately set by the trainer...)
or
Flight idle (depending on the (correct) 'rigging')... (On first flight of the day or airframe, you sometimes have 'no clue'...)
Two totally different worlds...
With (if not prepared, unexpected...) totally different (flight) characteristics...
Kind regards, learner...