Numbers

A question for the philosophers out there:  What happens in the following situations? Economically, socially, demographically?
If a village of 10 people loses 50% of it's population, 5 people die.  
A village with 100 people loses 20% of it's population, 80 people survive.  
A city with 100,000 people loses 5% of it's population, 5000 people die.
A country with 350,000 people loses 1% of it's population, 346,500 people survive
Another country with 350,000 people, but 3x the population density of the previous, loses 2% of it's population, 343,000 people survive.
A world population of 475 million is reduced to 350 million, with a loss of 25% population.  
A world population of 7,8 billion experiences a pandemic with a .015% death rate, at the same time having a birth rate 2 times the death rate.  

The second to last was obviously the Black Death that took place from 1346-1353.
The last is also obviously our current situation.  Never before in history have there been so many living people on planet Earth.  At the same time, we are crippled, almost I dare say, felled, by the relatively small death rate (and the relatively large hospitalisation rate) of the coronavirus.  This is a serious question for philosophers out there.  How do we solve this magnitude of problems facing us?  Because let's be honest, the coronavirus is a symptom of a much bigger problem.   Stepping out of evolutionary processes may be a token of our intelligence and ability to achieve amazing feats of technological advancement, yet at a certain point there will be an enormous price to pay.