49.5% is the change from 503 to 752
Calculation steps:
[( 752 - 503 ) ÷ 503] x 100 = 49.5%
Formula
Percentage change = [(752 - 503) / 503] x 100
Subtract the new number by the original number
752 - 503 = 249
249 ÷ 503 = 0.49502982107355864
0.49502982107355864 x 100 = 49.5%