3.78% is the change from 503 to 522
Calculation steps:
[( 522 - 503 ) ÷ 503] x 100 = 3.78%
Formula
Percentage change = [(522 - 503) / 503] x 100
Subtract the new number by the original number
522 - 503 = 19
19 ÷ 503 = 0.03777335984095427
0.03777335984095427 x 100 = 3.78%