-99.5% is the change from 401 to 2
Calculation steps:
[( 2 - 401 ) ÷ 401] x 100 = -99.5%
Formula
Percentage change = [(2 - 401) / 401] x 100
Subtract the new number by the original number
2 - 401 = -399
-399 ÷ 401 = -0.9950124688279302
-0.9950124688279302 x 100 = -99.5%