-67.06% is the change from 510 to 168
Calculation steps:
[( 168 - 510 ) ÷ 510] x 100 = -67.06%
Formula
Percentage change = [(168 - 510) / 510] x 100
Subtract the new number by the original number
168 - 510 = -342
-342 ÷ 510 = -0.6705882352941176
-0.6705882352941176 x 100 = -67.06%