-63.5% is the change from 400 to 146
Calculation steps:
[( 146 - 400 ) ÷ 400] x 100 = -63.5%
Formula
Percentage change = [(146 - 400) / 400] x 100
Subtract the new number by the original number
146 - 400 = -254
-254 ÷ 400 = -0.635
-0.635 x 100 = -63.5%