Question

Any change to the power sharing arrangement has to be passed only by both the Houses
of Parliament with at least two-thirds majority.
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Answer 1

Answer:

and 50% of the legislature of all the states combined .

Answer 2

Sharing of power between the Union Government and the State governments is basic to the structure of the Constitution. It is not easy to make changes to this power sharing arrangement. The Parliament cannot on its own change this arrangement. Any change to it has to be first passed by both the Houses of Parliament with at least two-thirds majority. Then it has to be ratified by the legislatures of at least half of the total States. In case of any dispute about the division of powers, the High Courts and the Supreme Court can make a decision.