-91.35% is the change from 971 to 84
Calculation steps:
[( 84 - 971 ) ÷ 971] x 100 = -91.35%
Formula
Percentage change = [(84 - 971) / 971] x 100
Subtract the new number by the original number
84 - 971 = -887
-887 ÷ 971 = -0.913491246138002
-0.913491246138002 x 100 = -91.35%