-11.59% is the change from 621 to 549
Calculation steps:
[( 549 - 621 ) ÷ 621] x 100 = -11.59%
Formula
Percentage change = [(549 - 621) / 621] x 100
Subtract the new number by the original number
549 - 621 = -72
-72 ÷ 621 = -0.11594202898550725
-0.11594202898550725 x 100 = -11.59%