-66.39% is the change from 964 to 324
Calculation steps:
[( 324 - 964 ) ÷ 964] x 100 = -66.39%
Formula
Percentage change = [(324 - 964) / 964] x 100
Subtract the new number by the original number
324 - 964 = -640
-640 ÷ 964 = -0.6639004149377593
-0.6639004149377593 x 100 = -66.39%