99.3% is the change from 431 to 859
Calculation steps:
[( 859 - 431 ) ÷ 431] x 100 = 99.3%
Formula
Percentage change = [(859 - 431) / 431] x 100
Subtract the new number by the original number
859 - 431 = 428
428 ÷ 431 = 0.9930394431554525
0.9930394431554525 x 100 = 99.3%