Question: What is the difference between *make decision* and *take decision*? When to use the one and when the other?

Answer: 
Make decision is the common form used in English. 

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> I want to think about it a bit longer before I make a decision.
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But take decision is used in British English. It means "making an important or formal decision". 

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> I fully accept the decision taken by the committee.
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It is more **Make** a decision more than **take** a decision. Even under pressure, you never take a decision. You make it. Even though time is restrictive, you evaluate the situation and make your final decision, regardless of the time limit. A level of mental evaluation has taken place thus calculations for the final decision has been **made**.

You also have to take into account that take is usually connected with theft. He took my money, we took the bank, I took his life etc.

Make a decision has been established for many years and functions correctly. Do not confuse it with take and spoil your English.