From my reading of the not very precise graph, about 32% of the external traffic was IPv6. This includes the traffic from the v6 only network not going through NAT64 + the v6 traffic from dual stack network.

Can we have the amount of v6 from the dual stack network (which will 100% go out as v6) to substract it on both sides and get the % of traffic from the v6 only network going out as v6/going through the NAT64?