-66.74% is the change from 965 to 321
Calculation steps:
[( 321 - 965 ) ÷ 965] x 100 = -66.74%
Formula
Percentage change = [(321 - 965) / 965] x 100
Subtract the new number by the original number
321 - 965 = -644
-644 ÷ 965 = -0.6673575129533679
-0.6673575129533679 x 100 = -66.74%