48.72% is the change from 509 to 757
Calculation steps:
[( 757 - 509 ) ÷ 509] x 100 = 48.72%
Formula
Percentage change = [(757 - 509) / 509] x 100
Subtract the new number by the original number
757 - 509 = 248
248 ÷ 509 = 0.48722986247544203
0.48722986247544203 x 100 = 48.72%
Example