-22.87% is the change from 621 to 479
Calculation steps:
[( 479 - 621 ) ÷ 621] x 100 = -22.87%
Formula
Percentage change = [(479 - 621) / 621] x 100
Subtract the new number by the original number
479 - 621 = -142
-142 ÷ 621 = -0.2286634460547504
-0.2286634460547504 x 100 = -22.87%