-15.48% is the change from 911 to 770
Calculation steps:
[( 770 - 911 ) ÷ 911] x 100 = -15.48%
Formula
Percentage change = [(770 - 911) / 911] x 100
Subtract the new number by the original number
770 - 911 = -141
-141 ÷ 911 = -0.15477497255762898
-0.15477497255762898 x 100 = -15.48%