Norway is a special market with almost 90% EV's with 18% for Tesla, so in other countries sales will most likely not decline as much in the same period since oversaturation is less of an issue. Norway can be a reference for other markets in the future but only if Tesla is able to clean up their reputation.
Since administration only started on the 21st, we will only see the real effect of decline in sales when numbers from March are published. Some other countries share car registrations which are from a time point a view much more reliable than sales, since it's unclear if this is about cars being delivered or ordered.
**Reasons of decline**
* (stronger) competition
* oversaturation of Tesla, people want to have another car as the rest
* Musk
Although oversaturation is less of a risk in other countries, people still steer away from Tesla in favour of different, fresher designs. Tesla is focusing a lot on new tech gadgets/software, while their cars still almost look the same as many years ago.
**Conclusion and near future**
Although it's unclear if the numbers are deliveries or orders in February, we can expect a furter decline. People that already decided to buy a Tesla are unlikely to cancel their order. So a furter decline is very possible. In Norway we might see almost no sales anymore because of all three reasons. In other countries sales could plunge the same as in Norway (-70%).
If the decline of sales keeps going this will in the short term become a big logistic and manufactoring problem for Tesla. They'll have to start dealing with overstock, production might need to be halted since more production might just lead to more overstock.