I am having difficulty understanding the Gravitational Time dilation formula. As per my understanding, clock should run faster as we move away from the gravitational field. But when I am applying the formula, I am getting the opposite result. Please see the attached formula. As r increases , t0 would be nearing to tf. So at r = infinity, t0 = tf. So as r is increasing , difference between t0 and tf is decreasing but I am expecting it to be opposite. Am I missing something ?