91.4% is the change from 430 to 823
Calculation steps:
[( 823 - 430 ) ÷ 430] x 100 = 91.4%
Formula
Percentage change = [(823 - 430) / 430] x 100
Subtract the new number by the original number
823 - 430 = 393
393 ÷ 430 = 0.913953488372093
0.913953488372093 x 100 = 91.4%