-99.8% is the change from 492 to 1
Calculation steps:
[( 1 - 492 ) ÷ 492] x 100 = -99.8%
Formula
Percentage change = [(1 - 492) / 492] x 100
Subtract the new number by the original number
1 - 492 = -491
-491 ÷ 492 = -0.9979674796747967
-0.9979674796747967 x 100 = -99.8%