75.82% is the change from 455 to 800
Calculation steps:
[( 800 - 455 ) ÷ 455] x 100 = 75.82%
Formula
Percentage change = [(800 - 455) / 455] x 100
Subtract the new number by the original number
800 - 455 = 345
345 ÷ 455 = 0.7582417582417582
0.7582417582417582 x 100 = 75.82%