-86.54% is the change from 676 to 91
Calculation steps:
[( 91 - 676 ) ÷ 676] x 100 = -86.54%
Formula
Percentage change = [(91 - 676) / 676] x 100
Subtract the new number by the original number
91 - 676 = -585
-585 ÷ 676 = -0.8653846153846154
-0.8653846153846154 x 100 = -86.54%