Prepare to have detailed duty list of your previous position and current
position. Do a table and list both side by side and show there are at least
51% differences.
Kind of like this:
job1. job2
dutyA 30%. dutyE 30%
dutyB 20%. dutyB 20%
dutyC 20%. dutyC 20%
dutyD 30%. dutyF 10%
dutyG 20%
Same duty (b,c) 40%
different duty 60%.