-35% is the change from 960 to 624
Calculation steps:
[( 624 - 960 ) ÷ 960] x 100 = -35%
Formula
Percentage change = [(624 - 960) / 960] x 100
Subtract the new number by the original number
624 - 960 = -336
-336 ÷ 960 = -0.35
-0.35 x 100 = -35%
Example