-14.89% is the change from 470 to 400
Calculation steps:
[( 400 - 470 ) ÷ 470] x 100 = -14.89%
Formula
Percentage change = [(400 - 470) / 470] x 100
Subtract the new number by the original number
400 - 470 = -70
-70 ÷ 470 = -0.14893617021276595
-0.14893617021276595 x 100 = -14.89%