Pickwhip one layer's Y position to another's Y position, each layer with its own respective range

I am wanting to pickwhip the y axis of 'Layer A' with the y axis 'Layer B'. I want the 'Layer A''s Y-Axis, when adjusted between 0-100, to adjust 'Layer B''s Y-Axis to a range of 25-75 at the same time. Can someone please help?

Thank you!