78.72% is the change from 470 to 840
Calculation steps:
[( 840 - 470 ) ÷ 470] x 100 = 78.72%
Formula
Percentage change = [(840 - 470) / 470] x 100
Subtract the new number by the original number
840 - 470 = 370
370 ÷ 470 = 0.7872340425531915
0.7872340425531915 x 100 = 78.72%