64.19% is the change from 511 to 839
Calculation steps:
[( 839 - 511 ) ÷ 511] x 100 = 64.19%
Formula
Percentage change = [(839 - 511) / 511] x 100
Subtract the new number by the original number
839 - 511 = 328
328 ÷ 511 = 0.6418786692759295
0.6418786692759295 x 100 = 64.19%