-43.54% is the change from 905 to 511
Calculation steps:
[( 511 - 905 ) ÷ 905] x 100 = -43.54%
Formula
Percentage change = [(511 - 905) / 905] x 100
Subtract the new number by the original number
511 - 905 = -394
-394 ÷ 905 = -0.4353591160220994
-0.4353591160220994 x 100 = -43.54%