-67.93% is the change from 502 to 161
Calculation steps:
[( 161 - 502 ) ÷ 502] x 100 = -67.93%
Formula
Percentage change = [(161 - 502) / 502] x 100
Subtract the new number by the original number
161 - 502 = -341
-341 ÷ 502 = -0.6792828685258964
-0.6792828685258964 x 100 = -67.93%