If you think about the numbers as 12% died vs 22% died, then the 51% intuitively makes more sense, although I don’t know if this is the correct explanation. My

If you think about the numbers as 12% died vs 22% died, then the 51% intuitively makes more sense, although I don’t know if this is the correct explanation. My guess is that 12 and 22 are rounded numbers.