Fetal percentile weight

At my 20 week ultrasound baby was in 38th percentile, I had a follow up ultrasound to see her profile at 25 weeks and she is now in the 23rd percentile. Not sure what to think of this. Dr said that everything was normal and I know she’s still within limits but has anyone else experienced a big change in percentile? I emailed my dr. Just to clarify because the ultrasound tech showed me the weight and it said 45th percentile but when I got the results it was 23, haven’t heard back yet. Her abdomen circumference was in like the 6th percentile.. A little confused and I’m sure it’s fine I’m just curious if anyone else has experienced this.