-11.74% is the change from 997 to 880
Calculation steps:
[( 880 - 997 ) ÷ 997] x 100 = -11.74%
Formula
Percentage change = [(880 - 997) / 997] x 100
Subtract the new number by the original number
880 - 997 = -117
-117 ÷ 997 = -0.11735205616850551
-0.11735205616850551 x 100 = -11.74%