-80.08% is the change from 798 to 159
Calculation steps:
[( 159 - 798 ) ÷ 798] x 100 = -80.08%
Formula
Percentage change = [(159 - 798) / 798] x 100
Subtract the new number by the original number
159 - 798 = -639
-639 ÷ 798 = -0.8007518796992481
-0.8007518796992481 x 100 = -80.08%