-42.82% is the change from 439 to 251
Calculation steps:
[( 251 - 439 ) ÷ 439] x 100 = -42.82%
Formula
Percentage change = [(251 - 439) / 439] x 100
Subtract the new number by the original number
251 - 439 = -188
-188 ÷ 439 = -0.428246013667426
-0.428246013667426 x 100 = -42.82%