63.35%. I just made that up. How do you expect me to know
You can spend your life digging around numbers to prove what you want them to prove. I am sure sinovac is not as effective as Pfizer. But in the real world, divorced from politics, countries that have used sinovac do not seem to be doing much worse than the others. There is certainly nothing at least superficially to support the constant "sinovac is useless" line.