-31.39% is the change from 771 to 529
Calculation steps:
[( 529 - 771 ) ÷ 771] x 100 = -31.39%
Formula
Percentage change = [(529 - 771) / 771] x 100
Subtract the new number by the original number
529 - 771 = -242
-242 ÷ 771 = -0.3138780804150454
-0.3138780804150454 x 100 = -31.39%