Percentage of the total

 

- What are you on about?
We are the crowns of creation, dawg!

So our kind of humans have been around for about 300,000 years, which is only 0.002% of the time the universe have existed so far (according to Big Bang cosmology) or 0.0066% of Earth´s existence. The average vertebrate genus exists for ten million years, which is about 0.22% of Earth's history (so far). Of course, the "high tech civilization" we all brag about is about 300 years old, and probably won´t last much longer.  

A 100-year human life is 0.0000022% of Earth’s current age and about 0.00000072% of the universe’s ditto. If the universe's age were one year (365 days) a 100-year human life would be about 0.004 seconds long. And most cornucopian professors don´t even live that long.

The planet we inhabit occupies about 0.000000000000000000000000000000000000000000000000000000000003% of the observable universe´s volume. We live in a "local hole" 150 million - 300 million light years wide, in which galaxies are relatively scarce. The observable universe is about 100 billion light years across. Humans have managed to reach the Moon and send space probes to the Kuyper belt, which is still in our cosmic backyard. 

On our planet, the most abundant multi-cellular organisms in terms of species might be beetles, and in terms of sheer numbers ants. The most common wild plants are weeds (from a human perspective). And yeah, I see ´em freakin´ everywhere! The oldest confirmed group of multicellular eukaryotes are red algae (1.2 billion years), while the oldest multicellular animals are sponges and cnidarians (600–700 million years) — and they still exist today. Of course, stromatolites were a thing already 3 billion years ago. The flamboyant dinosaurs have only been around for 5% of Earth´s history...and that includes the birds.

After a walk in the local parklands three years ago, I amused myself by checking up how old various genera of animals I spotted are in the geological record. Thus, gulls (genus Larus) has been around for 20 million years, crows (Corvus) for 5 million years, and so on. As already noted, our modern industrial civilization will probably not last more than 300 years. If I counted correctly, that´s 0.0015% of the time gulls of the genus Larus have existed on Earth.

No religious teacher can be taken seriously unless he/she factors in the above. Let him/her now step forward!