Changes to the original content will be highlighted. Additions will be highlighted in Green, like this. Removals will be crossed through and highlighted in Red like this

Here's an example:

Our second example below shows a change to the fist Facebook post in the campaign, the title goes from  "What Retirees Wish They Knew Before Retirement" to "Retirement Secrets: What Retirees Wish They Had Planned For".  
The addition (Retirement Secrets) is highlighted in green and the removal (Knew Before Retirement) is crossed through and highlighted in red.