-98.68% is the change from 911 to 12
Calculation steps:
[( 12 - 911 ) ÷ 911] x 100 = -98.68%
Formula
Percentage change = [(12 - 911) / 911] x 100
Subtract the new number by the original number
12 - 911 = -899
-899 ÷ 911 = -0.986827661909989
-0.986827661909989 x 100 = -98.68%