18.2% is the change from 423 to 500
Calculation steps:
[( 500 - 423 ) ÷ 423] x 100 = 18.2%
Formula
Percentage change = [(500 - 423) / 423] x 100
Subtract the new number by the original number
500 - 423 = 77
77 ÷ 423 = 0.18203309692671396
0.18203309692671396 x 100 = 18.2%