I have recently been reading some books and listening to some of Hawking's tapes on theoretical physcs, and I when they came to the question of "What is time and what is its speed?" I though of something:

The space-time continuum is bent by mass and the time is what is being bent. Would it be true to say that the relativity of the speed of time of the Earth and another planet would just be e/x, where e is the Earth's mass and x would be the mass of another planet? The answer would then be taken into a percentage.

I know that this is just a very simple equation....REALLY SIMPLE, but I feel that I am missing something. Like could the mass of a planet not bend the continuum enough to significally change the speed of time or maybe it would on change the speed of time between two areas only like 1% or so.

HELP ME!!!!!!!