-40.86% is the change from 771 to 456
Calculation steps:
[( 456 - 771 ) ÷ 771] x 100 = -40.86%
Formula
Percentage change = [(456 - 771) / 771] x 100
Subtract the new number by the original number
456 - 771 = -315
-315 ÷ 771 = -0.4085603112840467
-0.4085603112840467 x 100 = -40.86%