3.93% is the change from 535 to 556
Calculation steps:
[( 556 - 535 ) ÷ 535] x 100 = 3.93%
Formula
Percentage change = [(556 - 535) / 535] x 100
Subtract the new number by the original number
556 - 535 = 21
21 ÷ 535 = 0.03925233644859813
0.03925233644859813 x 100 = 3.93%