27.38% is the change from 504 to 642
Calculation steps:
[( 642 - 504 ) ÷ 504] x 100 = 27.38%
Formula
Percentage change = [(642 - 504) / 504] x 100
Subtract the new number by the original number
642 - 504 = 138
138 ÷ 504 = 0.27380952380952384
0.27380952380952384 x 100 = 27.38%