-5.38% is the change from 930 to 880
Calculation steps:
[( 880 - 930 ) ÷ 930] x 100 = -5.38%
Formula
Percentage change = [(880 - 930) / 930] x 100
Subtract the new number by the original number
880 - 930 = -50
-50 ÷ 930 = -0.053763440860215055
-0.053763440860215055 x 100 = -5.38%