80.88% is the change from 455 to 823
Calculation steps:
[( 823 - 455 ) ÷ 455] x 100 = 80.88%
Formula
Percentage change = [(823 - 455) / 455] x 100
Subtract the new number by the original number
823 - 455 = 368
368 ÷ 455 = 0.8087912087912088
0.8087912087912088 x 100 = 80.88%