3.57% is the change from 504 to 522
Calculation steps:
[( 522 - 504 ) ÷ 504] x 100 = 3.57%
Formula
Percentage change = [(522 - 504) / 504] x 100
Subtract the new number by the original number
522 - 504 = 18
18 ÷ 504 = 0.03571428571428571
0.03571428571428571 x 100 = 3.57%