-49.2% is the change from 439 to 223
Calculation steps:
[( 223 - 439 ) ÷ 439] x 100 = -49.2%
Formula
Percentage change = [(223 - 439) / 439] x 100
Subtract the new number by the original number
223 - 439 = -216
-216 ÷ 439 = -0.4920273348519362
-0.4920273348519362 x 100 = -49.2%