49.11% is the change from 503 to 750
Calculation steps:
[( 750 - 503 ) ÷ 503] x 100 = 49.11%
Formula
Percentage change = [(750 - 503) / 503] x 100
Subtract the new number by the original number
750 - 503 = 247
247 ÷ 503 = 0.49105367793240556
0.49105367793240556 x 100 = 49.11%