-57.07% is the change from 771 to 331
Calculation steps:
[( 331 - 771 ) ÷ 771] x 100 = -57.07%
Formula
Percentage change = [(331 - 771) / 771] x 100
Subtract the new number by the original number
331 - 771 = -440
-440 ÷ 771 = -0.5706874189364461
-0.5706874189364461 x 100 = -57.07%