-71.91% is the change from 509 to 143
Calculation steps:
[( 143 - 509 ) ÷ 509] x 100 = -71.91%
Formula
Percentage change = [(143 - 509) / 509] x 100
Subtract the new number by the original number
143 - 509 = -366
-366 ÷ 509 = -0.7190569744597249
-0.7190569744597249 x 100 = -71.91%