-55.21% is the change from 911 to 408
Calculation steps:
[( 408 - 911 ) ÷ 911] x 100 = -55.21%
Formula
Percentage change = [(408 - 911) / 911] x 100
Subtract the new number by the original number
408 - 911 = -503
-503 ÷ 911 = -0.5521405049396267
-0.5521405049396267 x 100 = -55.21%