-6.34% is the change from 426 to 399
Calculation steps:
[( 399 - 426 ) ÷ 426] x 100 = -6.34%
Formula
Percentage change = [(399 - 426) / 426] x 100
Subtract the new number by the original number
399 - 426 = -27
-27 ÷ 426 = -0.06338028169014084
-0.06338028169014084 x 100 = -6.34%