18.69% is the change from 503 to 597
Calculation steps:
[( 597 - 503 ) ÷ 503] x 100 = 18.69%
Formula
Percentage change = [(597 - 503) / 503] x 100
Subtract the new number by the original number
597 - 503 = 94
94 ÷ 503 = 0.18687872763419483
0.18687872763419483 x 100 = 18.69%