-80.4% is the change from 801 to 157
Calculation steps:
[( 157 - 801 ) ÷ 801] x 100 = -80.4%
Formula
Percentage change = [(157 - 801) / 801] x 100
Subtract the new number by the original number
157 - 801 = -644
-644 ÷ 801 = -0.8039950062421972
-0.8039950062421972 x 100 = -80.4%