Upvote:2
Transfers at Schipol airport is very simple, and I have done it many times.
KLM advise that 50 mins is ample for a transfer on an intercontinental flight.
https://www.klm.com/travel/gb_en/prepare_for_travel/at_the_airport/connections/index.htm
The airport website
https://www.schiphol.nl/en/transfers/
Has a tool to work out your transfer times.
As you say you are on one ticket, your luggage should be checked all the way though. But as per the comments on the question you cannot guarantee that your first flight will arrive on time. However as you are on one booking if you donβt make the connection KLM Delta will make rearrangements if required.
In short. You should be fine