27.36% is the change from 508 to 647
Calculation steps:
[( 647 - 508 ) ÷ 508] x 100 = 27.36%
Formula
Percentage change = [(647 - 508) / 508] x 100
Subtract the new number by the original number
647 - 508 = 139
139 ÷ 508 = 0.2736220472440945
0.2736220472440945 x 100 = 27.36%