-90.74% is the change from 983 to 91
Calculation steps:
[( 91 - 983 ) ÷ 983] x 100 = -90.74%
Formula
Percentage change = [(91 - 983) / 983] x 100
Subtract the new number by the original number
91 - 983 = -892
-892 ÷ 983 = -0.9074262461851476
-0.9074262461851476 x 100 = -90.74%