-56.97% is the change from 911 to 392
Calculation steps:
[( 392 - 911 ) ÷ 911] x 100 = -56.97%
Formula
Percentage change = [(392 - 911) / 911] x 100
Subtract the new number by the original number
392 - 911 = -519
-519 ÷ 911 = -0.5697036223929748
-0.5697036223929748 x 100 = -56.97%