-56.33% is the change from 964 to 421
Calculation steps:
[( 421 - 964 ) ÷ 964] x 100 = -56.33%
Formula
Percentage change = [(421 - 964) / 964] x 100
Subtract the new number by the original number
421 - 964 = -543
-543 ÷ 964 = -0.5632780082987552
-0.5632780082987552 x 100 = -56.33%