-56.25% is the change from 960 to 420
Calculation steps:
[( 420 - 960 ) ÷ 960] x 100 = -56.25%
Formula
Percentage change = [(420 - 960) / 960] x 100
Subtract the new number by the original number
420 - 960 = -540
-540 ÷ 960 = -0.5625
-0.5625 x 100 = -56.25%