-12.79% is the change from 516 to 450
Calculation steps:
[( 450 - 516 ) ÷ 516] x 100 = -12.79%
Formula
Percentage change = [(450 - 516) / 516] x 100
Subtract the new number by the original number
450 - 516 = -66
-66 ÷ 516 = -0.12790697674418605
-0.12790697674418605 x 100 = -12.79%