79.21% is the change from 457 to 819
Calculation steps:
[( 819 - 457 ) ÷ 457] x 100 = 79.21%
Formula
Percentage change = [(819 - 457) / 457] x 100
Subtract the new number by the original number
819 - 457 = 362
362 ÷ 457 = 0.7921225382932167
0.7921225382932167 x 100 = 79.21%