-12.4% is the change from 621 to 544
Calculation steps:
[( 544 - 621 ) ÷ 621] x 100 = -12.4%
Formula
Percentage change = [(544 - 621) / 621] x 100
Subtract the new number by the original number
544 - 621 = -77
-77 ÷ 621 = -0.12399355877616747
-0.12399355877616747 x 100 = -12.4%