80.62% is the change from 454 to 820
Calculation steps:
[( 820 - 454 ) ÷ 454] x 100 = 80.62%
Formula
Percentage change = [(820 - 454) / 454] x 100
Subtract the new number by the original number
820 - 454 = 366
366 ÷ 454 = 0.8061674008810573
0.8061674008810573 x 100 = 80.62%