(Opinion Strength for Chapter 'C' / Overall Survey Average Opinion Strength) * 100%
(Opinion Tone for Chapter 'C' / Overall Survey Average Opinion Tone) * 100%
(Opinion Average for Chapter 'C' / Overall Survey Opinion Average ) * 100% 
(Opinion Positive for Chapter 'C'/ Overall Survey Average Opinion Positive) * 100%
(Opinion Negative for Chapter 'C' / Overall Survey Average Opinion Negative) * 100%