-10.87% is the change from 911 to 812
Calculation steps:
[( 812 - 911 ) ÷ 911] x 100 = -10.87%
Formula
Percentage change = [(812 - 911) / 911] x 100
Subtract the new number by the original number
812 - 911 = -99
-99 ÷ 911 = -0.10867178924259056
-0.10867178924259056 x 100 = -10.87%