7 birds were sitting on a branch when a loud noise scared 4 of them away. What percentage of birds remained on the branch?

3/7 remaining is approximately equal to .428571
.4286 converts to 42.86\100 which equals 42.86%
3/7=42.86%

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.