-54.02% is the change from 909 to 418
Calculation steps:
[( 418 - 909 ) ÷ 909] x 100 = -54.02%
Formula
Percentage change = [(418 - 909) / 909] x 100
Subtract the new number by the original number
418 - 909 = -491
-491 ÷ 909 = -0.5401540154015402
-0.5401540154015402 x 100 = -54.02%