-16.04% is the change from 798 to 670
Calculation steps:
[( 670 - 798 ) ÷ 798] x 100 = -16.04%
Formula
Percentage change = [(670 - 798) / 798] x 100
Subtract the new number by the original number
670 - 798 = -128
-128 ÷ 798 = -0.16040100250626566
-0.16040100250626566 x 100 = -16.04%