88.35% is the change from 455 to 857
Calculation steps:
[( 857 - 455 ) ÷ 455] x 100 = 88.35%
Formula
Percentage change = [(857 - 455) / 455] x 100
Subtract the new number by the original number
857 - 455 = 402
402 ÷ 455 = 0.8835164835164835
0.8835164835164835 x 100 = 88.35%