Prescott vs pressure
vs NYG 6 of 17 66 yd 0 td 0 int 47.7
@ Was 6 of 8 75 yd 0 td 0 int 103.6
vs Chi 4 of 6 25 yd 0 td 0 int 75.0
@ SF 7 of 12 45 yd 1 td 0 int 94.1
vs Cin 3 of 7 42 yd 0 td 0 int 62.8
@ GB 3 of 4 25 yd 0 td 1 int 51.0
vs Phi
@ Cle
@ Pit 6 of 9 96 yd 1 td 0 int 139.1
vs Bal 5 of 10 66 yd 1 td 0 int 104.6
I don't like posting incomplete information, but I don't pay $1,500 for PFF premium stats, and the above is what I've been able to piece together. We can assume that he was not good vs. pressure in the Philly game, and very good against the Browns.
In any case, the improvement is easy to see. Especially the more he practices with Dez, who had both of those recent TD.