YouGov BrandIndex measurement scores range from 100 to -100 and are compiled by subtracting negative feedback from positive. A zero score means equal positive and negative feedback.
On July 16th, the day the Baptist Press published its Dan Cathy interview, Chick-Fil-A's Index score was 65, a very substantial 19 points above the Top National QSR Sector average score that day of 46.
Four days later, Chick-Fil-A had fallen to 47 score, three points below the Top National QSR Sector average score of 50. This past Wednesday, Chick-Fil-A had a 39 score compared to the Top National QSR Sector average score of 43.
YouGov BrandIndex respondents in the South took Chick-Fil-A from an Index score of 80 on July 16th to its current 44. Chick-Fil-A's biggest drop took place in the Northeast, where it went from 76 to 35, a difference of 41 points.