-90.6% is the change from 968 to 91
Calculation steps:
[( 91 - 968 ) ÷ 968] x 100 = -90.6%
Formula
Percentage change = [(91 - 968) / 968] x 100
Subtract the new number by the original number
91 - 968 = -877
-877 ÷ 968 = -0.90599173553719
-0.90599173553719 x 100 = -90.6%