-49.94% is the change from 801 to 401
Calculation steps:
[( 401 - 801 ) ÷ 801] x 100 = -49.94%
Formula
Percentage change = [(401 - 801) / 801] x 100
Subtract the new number by the original number
401 - 801 = -400
-400 ÷ 801 = -0.4993757802746567
-0.4993757802746567 x 100 = -49.94%