-54.45% is the change from 911 to 415
Calculation steps:
[( 415 - 911 ) ÷ 911] x 100 = -54.45%
Formula
Percentage change = [(415 - 911) / 911] x 100
Subtract the new number by the original number
415 - 911 = -496
-496 ÷ 911 = -0.544456641053787
-0.544456641053787 x 100 = -54.45%