-6.6% is the change from 470 to 439
Calculation steps:
[( 439 - 470 ) ÷ 470] x 100 = -6.6%
Formula
Percentage change = [(439 - 470) / 470] x 100
Subtract the new number by the original number
439 - 470 = -31
-31 ÷ 470 = -0.06595744680851064
-0.06595744680851064 x 100 = -6.6%