-58% is the change from 400 to 168
Calculation steps:
[( 168 - 400 ) ÷ 400] x 100 = -58%
Formula
Percentage change = [(168 - 400) / 400] x 100
Subtract the new number by the original number
168 - 400 = -232
-232 ÷ 400 = -0.58
-0.58 x 100 = -58%
Example