-9.55% is the change from 911 to 824
Calculation steps:
[( 824 - 911 ) ÷ 911] x 100 = -9.55%
Formula
Percentage change = [(824 - 911) / 911] x 100
Subtract the new number by the original number
824 - 911 = -87
-87 ÷ 911 = -0.09549945115257959
-0.09549945115257959 x 100 = -9.55%