It is a 255.7% increase. I stand corrected:
2019 revenues: $708,405
2020 revenues: $2,519,914
Actually, I stand corrected: I should have used $2,519,914 - $708,405 = an increase of $1,811,509 yoy (I used the full $2,519,914 figure by mistake).
Put into percentage terms, that would be a 255.7% increase in revenues yoy. My mistake.