-15.92% is the change from 911 to 766
Calculation steps:
[( 766 - 911 ) ÷ 911] x 100 = -15.92%
Formula
Percentage change = [(766 - 911) / 911] x 100
Subtract the new number by the original number
766 - 911 = -145
-145 ÷ 911 = -0.15916575192096596
-0.15916575192096596 x 100 = -15.92%