-71.94% is the change from 556 to 156
Calculation steps:
[( 156 - 556 ) ÷ 556] x 100 = -71.94%
Formula
Percentage change = [(156 - 556) / 556] x 100
Subtract the new number by the original number
156 - 556 = -400
-400 ÷ 556 = -0.7194244604316546
-0.7194244604316546 x 100 = -71.94%