-66.8% is the change from 506 to 168
Calculation steps:
[( 168 - 506 ) ÷ 506] x 100 = -66.8%
Formula
Percentage change = [(168 - 506) / 506] x 100
Subtract the new number by the original number
168 - 506 = -338
-338 ÷ 506 = -0.6679841897233202
-0.6679841897233202 x 100 = -66.8%