79.34% is the change from 455 to 816
Calculation steps:
[( 816 - 455 ) ÷ 455] x 100 = 79.34%
Formula
Percentage change = [(816 - 455) / 455] x 100
Subtract the new number by the original number
816 - 455 = 361
361 ÷ 455 = 0.7934065934065934
0.7934065934065934 x 100 = 79.34%