-76.77% is the change from 439 to 102
Calculation steps:
[( 102 - 439 ) ÷ 439] x 100 = -76.77%
Formula
Percentage change = [(102 - 439) / 439] x 100
Subtract the new number by the original number
102 - 439 = -337
-337 ÷ 439 = -0.7676537585421412
-0.7676537585421412 x 100 = -76.77%