-36.3% is the change from 909 to 579
Calculation steps:
[( 579 - 909 ) ÷ 909] x 100 = -36.3%
Formula
Percentage change = [(579 - 909) / 909] x 100
Subtract the new number by the original number
579 - 909 = -330
-330 ÷ 909 = -0.36303630363036304
-0.36303630363036304 x 100 = -36.3%