-43.65% is the change from 905 to 510
Calculation steps:
[( 510 - 905 ) ÷ 905] x 100 = -43.65%
Formula
Percentage change = [(510 - 905) / 905] x 100
Subtract the new number by the original number
510 - 905 = -395
-395 ÷ 905 = -0.43646408839779005
-0.43646408839779005 x 100 = -43.65%