-20.09% is the change from 911 to 728
Calculation steps:
[( 728 - 911 ) ÷ 911] x 100 = -20.09%
Formula
Percentage change = [(728 - 911) / 911] x 100
Subtract the new number by the original number
728 - 911 = -183
-183 ÷ 911 = -0.20087815587266739
-0.20087815587266739 x 100 = -20.09%