4.55% is the change from 505 to 528
Calculation steps:
[( 528 - 505 ) ÷ 505] x 100 = 4.55%
Formula
Percentage change = [(528 - 505) / 505] x 100
Subtract the new number by the original number
528 - 505 = 23
23 ÷ 505 = 0.04554455445544554
0.04554455445544554 x 100 = 4.55%