Does all processes that consume energy from outside result in negative entropy change?
Entropy increases in a spontaneous evolution of an isolated system… other than that, there is no general law on the evolution of entropy.




  does that mean all processes that consume energy from outside result in negative entropy change?


No. When you heat a solid, it increases its entropy.


  endothermic reactions causing the entropy to decrease?


Endothermic reactions which cause entropy to decrease have both ∆H positive and ∆S negative, so they will have a positive ∆G, i.e. their are not thermodynamically favorable.