-84.78% is the change from 979 to 149
Calculation steps:
[( 149 - 979 ) ÷ 979] x 100 = -84.78%
Formula
Percentage change = [(149 - 979) / 979] x 100
Subtract the new number by the original number
149 - 979 = -830
-830 ÷ 979 = -0.8478038815117467
-0.8478038815117467 x 100 = -84.78%