-86.62% is the change from 979 to 131
Calculation steps:
[( 131 - 979 ) ÷ 979] x 100 = -86.62%
Formula
Percentage change = [(131 - 979) / 979] x 100
Subtract the new number by the original number
131 - 979 = -848
-848 ÷ 979 = -0.8661899897854954
-0.8661899897854954 x 100 = -86.62%