82.55% is the change from 447 to 816
Calculation steps:
[( 816 - 447 ) ÷ 447] x 100 = 82.55%
Formula
Percentage change = [(816 - 447) / 447] x 100
Subtract the new number by the original number
816 - 447 = 369
369 ÷ 447 = 0.825503355704698
0.825503355704698 x 100 = 82.55%