-29.49% is the change from 434 to 306
Calculation steps:
[( 306 - 434 ) ÷ 434] x 100 = -29.49%
Formula
Percentage change = [(306 - 434) / 434] x 100
Subtract the new number by the original number
306 - 434 = -128
-128 ÷ 434 = -0.29493087557603687
-0.29493087557603687 x 100 = -29.49%