72.84% is the change from 475 to 821
Calculation steps:
[( 821 - 475 ) ÷ 475] x 100 = 72.84%
Formula
Percentage change = [(821 - 475) / 475] x 100
Subtract the new number by the original number
821 - 475 = 346
346 ÷ 475 = 0.728421052631579
0.728421052631579 x 100 = 72.84%