-27.63% is the change from 427 to 309
Calculation steps:
[( 309 - 427 ) ÷ 427] x 100 = -27.63%
Formula
Percentage change = [(309 - 427) / 427] x 100
Subtract the new number by the original number
309 - 427 = -118
-118 ÷ 427 = -0.27634660421545665
-0.27634660421545665 x 100 = -27.63%