-68.16% is the change from 515 to 164
Calculation steps:
[( 164 - 515 ) ÷ 515] x 100 = -68.16%
Formula
Percentage change = [(164 - 515) / 515] x 100
Subtract the new number by the original number
164 - 515 = -351
-351 ÷ 515 = -0.6815533980582524
-0.6815533980582524 x 100 = -68.16%