Percentage Increase and Decrease with a calculator

A series of 3/4 lessons I have used with a year 8 set three class who are mainly working torwards the expected level. A cross over topic between stage 7 and stage 8 of the Kangaroo SOW - aimed at using a calculator for percentage increase and decrease questions.
Contains Do It Now tasks that recap the previous lessons / learning, examples, whiteboard AFL questions, and tasks that can be differentiated. Along with an Exit Ticket at the end of the lessons to check understanding.
Borrowed resources from:
Mistry Maths (tes)
Corbett Maths
CGP foundation text book
Diagnostic Questions

The worksheet the ‘apply’ questions are referring to can be found here:
https://corbettmaths.com/wp-content/uploads/2018/11/Increasing-by-a-Percentage-pdf.pdf