-15.37% is the change from 911 to 771
Calculation steps:
[( 771 - 911 ) ÷ 911] x 100 = -15.37%
Formula
Percentage change = [(771 - 911) / 911] x 100
Subtract the new number by the original number
771 - 911 = -140
-140 ÷ 911 = -0.15367727771679474
-0.15367727771679474 x 100 = -15.37%