99.07% is the change from 431 to 858
Calculation steps:
[( 858 - 431 ) ÷ 431] x 100 = 99.07%
Formula
Percentage change = [(858 - 431) / 431] x 100
Subtract the new number by the original number
858 - 431 = 427
427 ÷ 431 = 0.9907192575406032
0.9907192575406032 x 100 = 99.07%