-66.87% is the change from 969 to 321
Calculation steps:
[( 321 - 969 ) ÷ 969] x 100 = -66.87%
Formula
Percentage change = [(321 - 969) / 969] x 100
Subtract the new number by the original number
321 - 969 = -648
-648 ÷ 969 = -0.6687306501547987
-0.6687306501547987 x 100 = -66.87%