-44.09% is the change from 905 to 506
Calculation steps:
[( 506 - 905 ) ÷ 905] x 100 = -44.09%
Formula
Percentage change = [(506 - 905) / 905] x 100
Subtract the new number by the original number
506 - 905 = -399
-399 ÷ 905 = -0.4408839779005525
-0.4408839779005525 x 100 = -44.09%