-3.87% is the change from 439 to 422
Calculation steps:
[( 422 - 439 ) ÷ 439] x 100 = -3.87%
Formula
Percentage change = [(422 - 439) / 439] x 100
Subtract the new number by the original number
422 - 439 = -17
-17 ÷ 439 = -0.0387243735763098
-0.0387243735763098 x 100 = -3.87%