65.24% is the change from 515 to 851
Calculation steps:
[( 851 - 515 ) ÷ 515] x 100 = 65.24%
Formula
Percentage change = [(851 - 515) / 515] x 100
Subtract the new number by the original number
851 - 515 = 336
336 ÷ 515 = 0.6524271844660194
0.6524271844660194 x 100 = 65.24%