Calculating New Bond Price reference, understand, something

Elliotbay

Hello!

Could somebody please put me out of my misery and show me how to calculate the new bond price of a bond. this is with reference to reading 61, pg 272 of the Equity and Fixed Income Book. I'm sure it is very simple however, I really don't know how to do it. I understand that if the coupon is smaller than the new yield we are going to see a small price, vice versa but when it comes to calculating the new bond price I am doing something very wrong.

many thanks,

Steph