77.68% is the change from 457 to 812
Calculation steps:
[( 812 - 457 ) ÷ 457] x 100 = 77.68%
Formula
Percentage change = [(812 - 457) / 457] x 100
Subtract the new number by the original number
812 - 457 = 355
355 ÷ 457 = 0.7768052516411379
0.7768052516411379 x 100 = 77.68%