-22.18% is the change from 798 to 621
Calculation steps:
[( 621 - 798 ) ÷ 798] x 100 = -22.18%
Formula
Percentage change = [(621 - 798) / 798] x 100
Subtract the new number by the original number
621 - 798 = -177
-177 ÷ 798 = -0.22180451127819548
-0.22180451127819548 x 100 = -22.18%