-8.7% is the change from 437 to 399
Calculation steps:
[( 399 - 437 ) ÷ 437] x 100 = -8.7%
Formula
Percentage change = [(399 - 437) / 437] x 100
Subtract the new number by the original number
399 - 437 = -38
-38 ÷ 437 = -0.08695652173913043
-0.08695652173913043 x 100 = -8.7%