-39.89% is the change from 529 to 318
Calculation steps:
[( 318 - 529 ) ÷ 529] x 100 = -39.89%
Formula
Percentage change = [(318 - 529) / 529] x 100
Subtract the new number by the original number
318 - 529 = -211
-211 ÷ 529 = -0.3988657844990548
-0.3988657844990548 x 100 = -39.89%