63,37,15,5,? how to solve it by number series?

Saul's excuse for his disobedience was: 1. he saved the sheep and oxen to feed the nation of israel. 2. the people spared the sheep and oxen to give as a sacrifice to the lord. 3. he didn't hear samuel's instructions to completely destroy the amalekites. 4. he wanted to show mercy to agag, the king of the amalekites.

Can you me find area of the shaded region?

What is 7/81 as a percentage? round your answer to the nearest tenth of a percent.