Would this be correct?

What is the percent increase in the population for all six inhabited continents,
excluding Asia, from 1950 to 2000?
total for 1950 - 965,000,000
total for 2000 - 2,251,000,000
2,251,000,000 - 965,000,000 = 1,286,000,000
1,286,000,000 divided by 965,000,000 = 1.3326= 133% increase in population.

I think you got it!

Thanks Lance!