-9.98% is the change from 431 to 388
Calculation steps:
[( 388 - 431 ) ÷ 431] x 100 = -9.98%
Formula
Percentage change = [(388 - 431) / 431] x 100
Subtract the new number by the original number
388 - 431 = -43
-43 ÷ 431 = -0.09976798143851508
-0.09976798143851508 x 100 = -9.98%