96.22% is the change from 423 to 830
Calculation steps:
[( 830 - 423 ) ÷ 423] x 100 = 96.22%
Formula
Percentage change = [(830 - 423) / 423] x 100
Subtract the new number by the original number
830 - 423 = 407
407 ÷ 423 = 0.9621749408983451
0.9621749408983451 x 100 = 96.22%