-89.63% is the change from 964 to 100
Calculation steps:
[( 100 - 964 ) ÷ 964] x 100 = -89.63%
Formula
Percentage change = [(100 - 964) / 964] x 100
Subtract the new number by the original number
100 - 964 = -864
-864 ÷ 964 = -0.8962655601659751
-0.8962655601659751 x 100 = -89.63%