20.09% is the change from 423 to 508
Calculation steps:
[( 508 - 423 ) ÷ 423] x 100 = 20.09%
Formula
Percentage change = [(508 - 423) / 423] x 100
Subtract the new number by the original number
508 - 423 = 85
85 ÷ 423 = 0.20094562647754138
0.20094562647754138 x 100 = 20.09%