-5.48% is the change from 931 to 880
Calculation steps:
[( 880 - 931 ) ÷ 931] x 100 = -5.48%
Formula
Percentage change = [(880 - 931) / 931] x 100
Subtract the new number by the original number
880 - 931 = -51
-51 ÷ 931 = -0.05477980665950591
-0.05477980665950591 x 100 = -5.48%