-13.16% is the change from 980 to 851
Calculation steps:
[( 851 - 980 ) ÷ 980] x 100 = -13.16%
Formula
Percentage change = [(851 - 980) / 980] x 100
Subtract the new number by the original number
851 - 980 = -129
-129 ÷ 980 = -0.13163265306122449
-0.13163265306122449 x 100 = -13.16%