-66.93% is the change from 508 to 168
Calculation steps:
[( 168 - 508 ) ÷ 508] x 100 = -66.93%
Formula
Percentage change = [(168 - 508) / 508] x 100
Subtract the new number by the original number
168 - 508 = -340
-340 ÷ 508 = -0.6692913385826772
-0.6692913385826772 x 100 = -66.93%