-90.55% is the change from 963 to 91
Calculation steps:
[( 91 - 963 ) ÷ 963] x 100 = -90.55%
Formula
Percentage change = [(91 - 963) / 963] x 100
Subtract the new number by the original number
91 - 963 = -872
-872 ÷ 963 = -0.9055036344755971
-0.9055036344755971 x 100 = -90.55%