-71.51% is the change from 502 to 143
Calculation steps:
[( 143 - 502 ) ÷ 502] x 100 = -71.51%
Formula
Percentage change = [(143 - 502) / 502] x 100
Subtract the new number by the original number
143 - 502 = -359
-359 ÷ 502 = -0.7151394422310757
-0.7151394422310757 x 100 = -71.51%