fix edge cases for display percentile
fix edge cases for display percentile

Impactstory/oadoi,Impactstory/oadoi,Impactstory/sherlockoa,Impactstory/citeas-api,Impactstory/citeas-api,Impactstory/sherlockoa,Impactstory/oadoi,Impactstory/citeas-api