31.78% is the change from 516 to 680
Calculation steps:
[( 680 - 516 ) ÷ 516] x 100 = 31.78%
Formula
Percentage change = [(680 - 516) / 516] x 100
Subtract the new number by the original number
680 - 516 = 164
164 ÷ 516 = 0.3178294573643411
0.3178294573643411 x 100 = 31.78%