71.7% is the change from 477 to 819
Calculation steps:
[( 819 - 477 ) ÷ 477] x 100 = 71.7%
Formula
Percentage change = [(819 - 477) / 477] x 100
Subtract the new number by the original number
819 - 477 = 342
342 ÷ 477 = 0.7169811320754716
0.7169811320754716 x 100 = 71.7%