-27.23% is the change from 470 to 342
Calculation steps:
[( 342 - 470 ) ÷ 470] x 100 = -27.23%
Formula
Percentage change = [(342 - 470) / 470] x 100
Subtract the new number by the original number
342 - 470 = -128
-128 ÷ 470 = -0.2723404255319149
-0.2723404255319149 x 100 = -27.23%