Mutual Fund Charts How Come The Return On A Mutual Fund Is Negative If The Fund Kept Going Up?

How come the return on a mutual fund is negative if the fund kept going up? - mutual fund charts

For example, to ensure, that you FEMKX
http://finance.yahoo.com/q/pm?s=FEMKX
Ongoing Performance 1 month (%) -2.74, but when I checked
graphs last month, which was frequently quoted.
How can that be negative? I'm sure it's a good reason, but I do not understand. No idea why? Thank you!