-82.71% is the change from 798 to 138
Calculation steps:
[( 138 - 798 ) ÷ 798] x 100 = -82.71%
Formula
Percentage change = [(138 - 798) / 798] x 100
Subtract the new number by the original number
138 - 798 = -660
-660 ÷ 798 = -0.8270676691729323
-0.8270676691729323 x 100 = -82.71%