A pie graph is more effective that other types of graphs for showing shares of a total.
Line graph
A pie graph would be used for percents (anything that adds up to 100%)
A pie graph is best for using to show percentages.
Most likely a bar or pie graph
either a pie chart or a bar graph would work...
it can but it would be hard it would be a lot easier to use a line graph
pie graph
A pie graph is used when representing portions of a whole.
if your trying to show percentage and not change in percentage u use a pie graph
A pie graph or composite bar.
you could use almost any kind of graph if you label it. But i would stay away from pie graphs. I would use a box and whisker plot.
175% would be a pie graph and then 3/4 of another one. See the related link, "175% pie graph" for a picture.