-21.04% is the change from 556 to 439
Calculation steps:
[( 439 - 556 ) ÷ 556] x 100 = -21.04%
Formula
Percentage change = [(439 - 556) / 556] x 100
Subtract the new number by the original number
439 - 556 = -117
-117 ÷ 556 = -0.210431654676259
-0.210431654676259 x 100 = -21.04%