-68.35% is the change from 515 to 163
Calculation steps:
[( 163 - 515 ) ÷ 515] x 100 = -68.35%
Formula
Percentage change = [(163 - 515) / 515] x 100
Subtract the new number by the original number
163 - 515 = -352
-352 ÷ 515 = -0.683495145631068
-0.683495145631068 x 100 = -68.35%