-27.4% is the change from 427 to 310
Calculation steps:
[( 310 - 427 ) ÷ 427] x 100 = -27.4%
Formula
Percentage change = [(310 - 427) / 427] x 100
Subtract the new number by the original number
310 - 427 = -117
-117 ÷ 427 = -0.27400468384074944
-0.27400468384074944 x 100 = -27.4%