-86.99% is the change from 515 to 67
Calculation steps:
[( 67 - 515 ) ÷ 515] x 100 = -86.99%
Formula
Percentage change = [(67 - 515) / 515] x 100
Subtract the new number by the original number
67 - 515 = -448
-448 ÷ 515 = -0.8699029126213592
-0.8699029126213592 x 100 = -86.99%