36.58% is the change from 503 to 687
Calculation steps:
[( 687 - 503 ) ÷ 503] x 100 = 36.58%
Formula
Percentage change = [(687 - 503) / 503] x 100
Subtract the new number by the original number
687 - 503 = 184
184 ÷ 503 = 0.3658051689860835
0.3658051689860835 x 100 = 36.58%