97.91% is the change from 430 to 851
Calculation steps:
[( 851 - 430 ) ÷ 430] x 100 = 97.91%
Formula
Percentage change = [(851 - 430) / 430] x 100
Subtract the new number by the original number
851 - 430 = 421
421 ÷ 430 = 0.9790697674418605
0.9790697674418605 x 100 = 97.91%