66.09% is the change from 516 to 857
Calculation steps:
[( 857 - 516 ) ÷ 516] x 100 = 66.09%
Formula
Percentage change = [(857 - 516) / 516] x 100
Subtract the new number by the original number
857 - 516 = 341
341 ÷ 516 = 0.6608527131782945
0.6608527131782945 x 100 = 66.09%