68.54% is the change from 515 to 868
Calculation steps:
[( 868 - 515 ) ÷ 515] x 100 = 68.54%
Formula
Percentage change = [(868 - 515) / 515] x 100
Subtract the new number by the original number
868 - 515 = 353
353 ÷ 515 = 0.6854368932038835
0.6854368932038835 x 100 = 68.54%