76.6% is the change from 470 to 830
Calculation steps:
[( 830 - 470 ) ÷ 470] x 100 = 76.6%
Formula
Percentage change = [(830 - 470) / 470] x 100
Subtract the new number by the original number
830 - 470 = 360
360 ÷ 470 = 0.7659574468085106
0.7659574468085106 x 100 = 76.6%