-4.32% is the change from 417 to 399
Calculation steps:
[( 399 - 417 ) ÷ 417] x 100 = -4.32%
Formula
Percentage change = [(399 - 417) / 417] x 100
Subtract the new number by the original number
399 - 417 = -18
-18 ÷ 417 = -0.04316546762589928
-0.04316546762589928 x 100 = -4.32%