-39.93% is the change from 909 to 546
Calculation steps:
[( 546 - 909 ) ÷ 909] x 100 = -39.93%
Formula
Percentage change = [(546 - 909) / 909] x 100
Subtract the new number by the original number
546 - 909 = -363
-363 ÷ 909 = -0.39933993399339934
-0.39933993399339934 x 100 = -39.93%