67.51% is the change from 511 to 856
Calculation steps:
[( 856 - 511 ) ÷ 511] x 100 = 67.51%
Formula
Percentage change = [(856 - 511) / 511] x 100
Subtract the new number by the original number
856 - 511 = 345
345 ÷ 511 = 0.675146771037182
0.675146771037182 x 100 = 67.51%