63.69% is the change from 515 to 843
Calculation steps:
[( 843 - 515 ) ÷ 515] x 100 = 63.69%
Formula
Percentage change = [(843 - 515) / 515] x 100
Subtract the new number by the original number
843 - 515 = 328
328 ÷ 515 = 0.6368932038834951
0.6368932038834951 x 100 = 63.69%