Express your response to all questions below refined to at least the fourth digit after the decimal point. Example: 12.3456% and INR 71.1234 / $.

China faces increasing international pressure in its yuan (CNY) exchange rate against the US dollar. The current exchange rate is CNY 6.5601/$. In his private meeting with President Obama, the then Chinese President Hu Jintao had suggested an exchange rate of CNY 6.4601/$ as a possibility. The percentage change under this proposal by President Hu Jintao is %.

President Obama murmurs, "Enough is Enough" and insists on a 10% revaluation from the current rate of CNY6.5601/$. What is President Obama's expectation of an exchange rate? CNY / $

About the time President Obama was handing over the administration to President Trump, China announced an exchange rate of CNY 6.74486/$ as the new exchange rate. What is the change in exchange rate from CNY 6.5601/$ to CNY 6.74486/$? %

In his proposed meeting with Chairman Xi Jinping later this year, President Trump hopes to accomplish a 15% revaluation from the current rate of CNY6.74486/$. The exchange rate President Trump is hoping for is CNY / $