62.91% is the change from 515 to 839
Calculation steps:
[( 839 - 515 ) ÷ 515] x 100 = 62.91%
Formula
Percentage change = [(839 - 515) / 515] x 100
Subtract the new number by the original number
839 - 515 = 324
324 ÷ 515 = 0.629126213592233
0.629126213592233 x 100 = 62.91%