78.02% is the change from 455 to 810
Calculation steps:
[( 810 - 455 ) ÷ 455] x 100 = 78.02%
Formula
Percentage change = [(810 - 455) / 455] x 100
Subtract the new number by the original number
810 - 455 = 355
355 ÷ 455 = 0.7802197802197802
0.7802197802197802 x 100 = 78.02%