-31.13% is the change from 771 to 531
Calculation steps:
[( 531 - 771 ) ÷ 771] x 100 = -31.13%
Formula
Percentage change = [(531 - 771) / 771] x 100
Subtract the new number by the original number
531 - 771 = -240
-240 ÷ 771 = -0.311284046692607
-0.311284046692607 x 100 = -31.13%