-89.25% is the change from 400 to 43
Calculation steps:
[( 43 - 400 ) ÷ 400] x 100 = -89.25%
Formula
Percentage change = [(43 - 400) / 400] x 100
Subtract the new number by the original number
43 - 400 = -357
-357 ÷ 400 = -0.8925
-0.8925 x 100 = -89.25%