-16.6% is the change from 470 to 392
Calculation steps:
[( 392 - 470 ) ÷ 470] x 100 = -16.6%
Formula
Percentage change = [(392 - 470) / 470] x 100
Subtract the new number by the original number
392 - 470 = -78
-78 ÷ 470 = -0.16595744680851063
-0.16595744680851063 x 100 = -16.6%