-66.91% is the change from 964 to 319
Calculation steps:
[( 319 - 964 ) ÷ 964] x 100 = -66.91%
Formula
Percentage change = [(319 - 964) / 964] x 100
Subtract the new number by the original number
319 - 964 = -645
-645 ÷ 964 = -0.6690871369294605
-0.6690871369294605 x 100 = -66.91%