How to calculate percentage of each drainage class for 60 individual polygons.

[DavidEdlund]

Hello all,

I am looking for recommendations on how to approach calculating the percentage of drainage classes within 60 polygons (or "blocks"). See attached screenshot. I have 60 "blocks" scattered throughout an area and need to calculate the proportion of each class within each block and put the values into a table. In the example here, I am looking at drainage class (8 classes) but also want to do this with National Land Cover Data. 

For example:

Block IL_P = 10% Excessively Drained, 20% somewhat excessively drained, 50% well-drained, 20% poorly drained, very poorly drained = 0%, etc.

How can I do this in an efficient manner? 

[DanPatterson]

in raster world

Tabulate Area (Spatial Analyst)—ArcGIS Pro | Documentation

you can do the percentage conversion yourself from the table

[DavidEdlund]

Thank you, Dan. I'll read into this.