-39.7% is the change from 529 to 319
Calculation steps:
[( 319 - 529 ) ÷ 529] x 100 = -39.7%
Formula
Percentage change = [(319 - 529) / 529] x 100
Subtract the new number by the original number
319 - 529 = -210
-210 ÷ 529 = -0.39697542533081287
-0.39697542533081287 x 100 = -39.7%