-44.22% is the change from 909 to 507
Calculation steps:
[( 507 - 909 ) ÷ 909] x 100 = -44.22%
Formula
Percentage change = [(507 - 909) / 909] x 100
Subtract the new number by the original number
507 - 909 = -402
-402 ÷ 909 = -0.44224422442244227
-0.44224422442244227 x 100 = -44.22%