-18.56% is the change from 431 to 351
Calculation steps:
[( 351 - 431 ) ÷ 431] x 100 = -18.56%
Formula
Percentage change = [(351 - 431) / 431] x 100
Subtract the new number by the original number
351 - 431 = -80
-80 ÷ 431 = -0.18561484918793503
-0.18561484918793503 x 100 = -18.56%