7.94% is the change from 504 to 544
Calculation steps:
[( 544 - 504 ) ÷ 504] x 100 = 7.94%
Formula
Percentage change = [(544 - 504) / 504] x 100
Subtract the new number by the original number
544 - 504 = 40
40 ÷ 504 = 0.07936507936507936
0.07936507936507936 x 100 = 7.94%