-49.89% is the change from 439 to 220
Calculation steps:
[( 220 - 439 ) ÷ 439] x 100 = -49.89%
Formula
Percentage change = [(220 - 439) / 439] x 100
Subtract the new number by the original number
220 - 439 = -219
-219 ÷ 439 = -0.4988610478359909
-0.4988610478359909 x 100 = -49.89%