How do I find 680% as a fraction mixed number or whole number in simplest form

680/100=680%. So divide both numbers by the gcf and you get the gcf to be 20 which would make the fraction 34/5. And take out as many 5's as possible and u get 6 with 4/5 left in. So the mixed number would be 6 (4/5). Then for the whole number simply move the decimal to the left 2 times and you get 6.8