-91.86% is the change from 971 to 79
Calculation steps:
[( 79 - 971 ) ÷ 971] x 100 = -91.86%
Formula
Percentage change = [(79 - 971) / 971] x 100
Subtract the new number by the original number
79 - 971 = -892
-892 ÷ 971 = -0.9186405767250257
-0.9186405767250257 x 100 = -91.86%