As per Red hat official documentation [-], The default maximum number of pods per node is 250.

However when checked in the test cluster, observed more than 250 pods scheduled per node in the cluster. 

[-] https://docs.openshift.com/container-platform/4.14/scalability_and_performance/planning-your-environment-according-to-object-maximums.html#cluster-maximums-major-releases_object-limits    

100%

Test in a cluster 3 master and 3 worker nodes
1. Create a new project : $ oc new-project test
2. Create new application : $ oc new-app httpd
3. Increase the pod replica to 900
4. Check the number of pods per node : $ oc get pods -A -o wide | grep -i node-name | wc -l

As per documentation, the maximum number of pods can be scheduled per node is 250. In a test cluster , pods more than the default value are scheduled per node
~~~
$ oc get pods -o wide | grep -i worker-0 | wc -l
270
~~~

If the default value of pods to get scheduled per node is changed, the documentation should be updated and must have the correct details.

Checked the pods per node :
[quickcluster@upi-0 ~]$ oc get pods -A -o wide | grep -i worker-0 | wc -l
30
[quickcluster@upi-0 ~]$ oc get pods -A -o wide | grep -i worker-1 | wc -l
18
[quickcluster@upi-0 ~]$ oc get pods -A -o wide | grep -i worker-2 | wc -l
31

Created new project : $ oc new-project test

Created new application : $ oc new-app httpd

Edited deployment and checked the replicas to 900

Checked the pods per node :
[quickcluster@upi-0 ~]$ oc get pods -A -o wide | grep -i worker-2 | wc -l
256
[quickcluster@upi-0 ~]$ oc get pods -A -o wide | grep -i worker-0 | wc -l
270