-2.35% is the change from 980 to 957
Calculation steps:
[( 957 - 980 ) ÷ 980] x 100 = -2.35%
Formula
Percentage change = [(957 - 980) / 980] x 100
Subtract the new number by the original number
957 - 980 = -23
-23 ÷ 980 = -0.02346938775510204
-0.02346938775510204 x 100 = -2.35%