-50.4% is the change from 869 to 431
Calculation steps:
[( 431 - 869 ) ÷ 869] x 100 = -50.4%
Formula
Percentage change = [(431 - 869) / 869] x 100
Subtract the new number by the original number
431 - 869 = -438
-438 ÷ 869 = -0.5040276179516686
-0.5040276179516686 x 100 = -50.4%