-2.33% is the change from 817 to 798
Calculation steps:
[( 798 - 817 ) ÷ 817] x 100 = -2.33%
Formula
Percentage change = [(798 - 817) / 817] x 100
Subtract the new number by the original number
798 - 817 = -19
-19 ÷ 817 = -0.023255813953488372
-0.023255813953488372 x 100 = -2.33%