-6.9% is the change from 435 to 405
Calculation steps:
[( 405 - 435 ) ÷ 435] x 100 = -6.9%
Formula
Percentage change = [(405 - 435) / 435] x 100
Subtract the new number by the original number
405 - 435 = -30
-30 ÷ 435 = -0.06896551724137931
-0.06896551724137931 x 100 = -6.9%