-40.66% is the change from 423 to 251
Calculation steps:
[( 251 - 423 ) ÷ 423] x 100 = -40.66%
Formula
Percentage change = [(251 - 423) / 423] x 100
Subtract the new number by the original number
251 - 423 = -172
-172 ÷ 423 = -0.4066193853427896
-0.4066193853427896 x 100 = -40.66%