93.02% is the change from 430 to 830
Calculation steps:
[( 830 - 430 ) ÷ 430] x 100 = 93.02%
Formula
Percentage change = [(830 - 430) / 430] x 100
Subtract the new number by the original number
830 - 430 = 400
400 ÷ 430 = 0.9302325581395349
0.9302325581395349 x 100 = 93.02%