98.83% is the change from 428 to 851
Calculation steps:
[( 851 - 428 ) ÷ 428] x 100 = 98.83%
Formula
Percentage change = [(851 - 428) / 428] x 100
Subtract the new number by the original number
851 - 428 = 423
423 ÷ 428 = 0.9883177570093458
0.9883177570093458 x 100 = 98.83%