You can select different values to use for the donut graphs:
Frequency - Click on “frequency” to use frequency for the donut visualization.
Relative Abundance - Click on “relative abundance” to use relative abundance for the donut visualization.
% Others - Enter a number in front of %others to group more or fewer organisms into the “others” category. This is useful if you have many lower abundance organisms and you would like to get a better view of the higher level calls.