-8.38% is the change from 334 to 306
Calculation steps:
[( 306 - 334 ) ÷ 334] x 100 = -8.38%
Formula
Percentage change = [(306 - 334) / 334] x 100
Subtract the new number by the original number
306 - 334 = -28
-28 ÷ 334 = -0.08383233532934131
-0.08383233532934131 x 100 = -8.38%