-32.53% is the change from 624 to 421
Calculation steps:
[( 421 - 624 ) ÷ 624] x 100 = -32.53%
Formula
Percentage change = [(421 - 624) / 624] x 100
Subtract the new number by the original number
421 - 624 = -203
-203 ÷ 624 = -0.32532051282051283
-0.32532051282051283 x 100 = -32.53%