78.56% is the change from 457 to 816
Calculation steps:
[( 816 - 457 ) ÷ 457] x 100 = 78.56%
Formula
Percentage change = [(816 - 457) / 457] x 100
Subtract the new number by the original number
816 - 457 = 359
359 ÷ 457 = 0.7855579868708972
0.7855579868708972 x 100 = 78.56%