-27.46% is the change from 426 to 309
Calculation steps:
[( 309 - 426 ) ÷ 426] x 100 = -27.46%
Formula
Percentage change = [(309 - 426) / 426] x 100
Subtract the new number by the original number
309 - 426 = -117
-117 ÷ 426 = -0.2746478873239437
-0.2746478873239437 x 100 = -27.46%