Template to show only adds and updates (new and old line only)

[Roger_Wareham]

Good evening all,

When the workflow sends out the report on adds and updates, I only want to show the old line and updated line only, next to each other.
Example question

What is your age?
Old line 34
Updated line 35

(do not show any items which has not changed)

Can anyone help me with this.
Thank in advance for the help.