77.9% is the change from 457 to 813
Calculation steps:
[( 813 - 457 ) ÷ 457] x 100 = 77.9%
Formula
Percentage change = [(813 - 457) / 457] x 100
Subtract the new number by the original number
813 - 457 = 356
356 ÷ 457 = 0.7789934354485777
0.7789934354485777 x 100 = 77.9%