I am having a difficult time understanding how to get the percentage when the numbers are large.

EX:

What percentage of the total funds seized in 1994 was canadian

A 10.5 b 20.5

C 5.5. D 0.5

Canadian funds $3635 American funds $721,944 Total = $725,579

I have trouble dividing big numbers, I was wondering how I would find the whole number from the options for percents that are given.

Any help would be appreciated!!