-38.42% is the change from 406 to 250
Calculation steps:
[( 250 - 406 ) ÷ 406] x 100 = -38.42%
Formula
Percentage change = [(250 - 406) / 406] x 100
Subtract the new number by the original number
250 - 406 = -156
-156 ÷ 406 = -0.3842364532019704
-0.3842364532019704 x 100 = -38.42%