-34.89% is the change from 470 to 306
Calculation steps:
[( 306 - 470 ) ÷ 470] x 100 = -34.89%
Formula
Percentage change = [(306 - 470) / 470] x 100
Subtract the new number by the original number
306 - 470 = -164
-164 ÷ 470 = -0.34893617021276596
-0.34893617021276596 x 100 = -34.89%