-56% is the change from 400 to 176
Calculation steps:
[( 176 - 400 ) ÷ 400] x 100 = -56%
Formula
Percentage change = [(176 - 400) / 400] x 100
Subtract the new number by the original number
176 - 400 = -224
-224 ÷ 400 = -0.56
-0.56 x 100 = -56%
Example