-80.42% is the change from 807 to 158
Calculation steps:
[( 158 - 807 ) ÷ 807] x 100 = -80.42%
Formula
Percentage change = [(158 - 807) / 807] x 100
Subtract the new number by the original number
158 - 807 = -649
-649 ÷ 807 = -0.8042131350681536
-0.8042131350681536 x 100 = -80.42%