-66.53% is the change from 502 to 168
Calculation steps:
[( 168 - 502 ) ÷ 502] x 100 = -66.53%
Formula
Percentage change = [(168 - 502) / 502] x 100
Subtract the new number by the original number
168 - 502 = -334
-334 ÷ 502 = -0.6653386454183267
-0.6653386454183267 x 100 = -66.53%