-80.2% is the change from 793 to 157
Calculation steps:
[( 157 - 793 ) ÷ 793] x 100 = -80.2%
Formula
Percentage change = [(157 - 793) / 793] x 100
Subtract the new number by the original number
157 - 793 = -636
-636 ÷ 793 = -0.8020176544766708
-0.8020176544766708 x 100 = -80.2%