Flood insurance premium 25yr FP vs 100 Yr FP

[James K.]

I'm looking at a property for a potential buy and hold that's currently in a 100yr flood plain, but it will be converted into a 25 year flood plain under the new Atlas 14 changes.  I'm trying to asses what financial impact this change will have. Does anyone have any insight to how insurance premiums compare between a 25 yr FP and a 100 yr FP?  Is there anything else I should consider when assessing this increased risk?