-27.86% is the change from 621 to 448
Calculation steps:
[( 448 - 621 ) ÷ 621] x 100 = -27.86%
Formula
Percentage change = [(448 - 621) / 621] x 100
Subtract the new number by the original number
448 - 621 = -173
-173 ÷ 621 = -0.2785829307568438
-0.2785829307568438 x 100 = -27.86%