the meme in uses debated figures, but they're not far off.

historical war deaths total around 1-1.6 billion.

global abortions since 1980 total roughly 1.7 billion based on annual averages rising from ~30m to 73m.

guttmacher institute

https://www.guttmacher.org/fact-sheet/induced-abortion-worldwide

wikipedia

https://en.wikipedia.org/wiki/List_of_wars_by_death_toll