-96.51% is the change from 516 to 18
Calculation steps:
[( 18 - 516 ) ÷ 516] x 100 = -96.51%
Formula
Percentage change = [(18 - 516) / 516] x 100
Subtract the new number by the original number
18 - 516 = -498
-498 ÷ 516 = -0.9651162790697675
-0.9651162790697675 x 100 = -96.51%