Time passage

The universe is thought to be ~13.8 billion years old.
Our milky way galaxy is ~13.6 billion years old.
The sun is ~4.6 billion years old.
The earth is ~4.54 billion years old.
The first life on earth started ~4 billion years ago.
The dinosaur era lasted for 165 million years and went extinct 65 million years ago.
Homo sapiens has existed for ~300,000 years on earth or about 0.007% of the time that the earth has existed.