61% is the change from 518 to 834
Calculation steps:
[( 834 - 518 ) ÷ 518] x 100 = 61%
Formula
Percentage change = [(834 - 518) / 518] x 100
Subtract the new number by the original number
834 - 518 = 316
316 ÷ 518 = 0.61003861003861
0.61003861003861 x 100 = 61%