-15.81% is the change from 911 to 767
Calculation steps:
[( 767 - 911 ) ÷ 911] x 100 = -15.81%
Formula
Percentage change = [(767 - 911) / 911] x 100
Subtract the new number by the original number
767 - 911 = -144
-144 ÷ 911 = -0.15806805708013172
-0.15806805708013172 x 100 = -15.81%