This is an example showing the features of sequence explorer. With .percentages([]) (documentation) you can specify different percentages. It affects the tooltip percentages shown. Also the first element in the array determines the percentages shown when you click on a label of the y axis.
Link to sequence explorer on github.
https://d3js.org/d3.v4.min.js
https://ee2dev.github.io/libs/sequence-explorer.v20.min.js