-39.74% is the change from 911 to 549
Calculation steps:
[( 549 - 911 ) ÷ 911] x 100 = -39.74%
Formula
Percentage change = [(549 - 911) / 911] x 100
Subtract the new number by the original number
549 - 911 = -362
-362 ÷ 911 = -0.3973655323819978
-0.3973655323819978 x 100 = -39.74%