-93.74% is the change from 911 to 57
Calculation steps:
[( 57 - 911 ) ÷ 911] x 100 = -93.74%
Formula
Percentage change = [(57 - 911) / 911] x 100
Subtract the new number by the original number
57 - 911 = -854
-854 ÷ 911 = -0.9374313940724479
-0.9374313940724479 x 100 = -93.74%