-53.78% is the change from 556 to 257
Calculation steps:
[( 257 - 556 ) ÷ 556] x 100 = -53.78%
Formula
Percentage change = [(257 - 556) / 556] x 100
Subtract the new number by the original number
257 - 556 = -299
-299 ÷ 556 = -0.5377697841726619
-0.5377697841726619 x 100 = -53.78%