-21.18% is the change from 439 to 346
Calculation steps:
[( 346 - 439 ) ÷ 439] x 100 = -21.18%
Formula
Percentage change = [(346 - 439) / 439] x 100
Subtract the new number by the original number
346 - 439 = -93
-93 ÷ 439 = -0.21184510250569477
-0.21184510250569477 x 100 = -21.18%