-72.5% is the change from 520 to 143
Calculation steps:
[( 143 - 520 ) ÷ 520] x 100 = -72.5%
Formula
Percentage change = [(143 - 520) / 520] x 100
Subtract the new number by the original number
143 - 520 = -377
-377 ÷ 520 = -0.725
-0.725 x 100 = -72.5%