-66.6% is the change from 503 to 168
Calculation steps:
[( 168 - 503 ) ÷ 503] x 100 = -66.6%
Formula
Percentage change = [(168 - 503) / 503] x 100
Subtract the new number by the original number
168 - 503 = -335
-335 ÷ 503 = -0.6660039761431411
-0.6660039761431411 x 100 = -66.6%