-28.34% is the change from 427 to 306
Calculation steps:
[( 306 - 427 ) ÷ 427] x 100 = -28.34%
Formula
Percentage change = [(306 - 427) / 427] x 100
Subtract the new number by the original number
306 - 427 = -121
-121 ÷ 427 = -0.28337236533957844
-0.28337236533957844 x 100 = -28.34%