-91.15% is the change from 972 to 86
Calculation steps:
[( 86 - 972 ) ÷ 972] x 100 = -91.15%
Formula
Percentage change = [(86 - 972) / 972] x 100
Subtract the new number by the original number
86 - 972 = -886
-886 ÷ 972 = -0.911522633744856
-0.911522633744856 x 100 = -91.15%