-99.49% is the change from 198 to 1
Calculation steps:
[( 1 - 198 ) ÷ 198] x 100 = -99.49%
Formula
Percentage change = [(1 - 198) / 198] x 100
Subtract the new number by the original number
1 - 198 = -197
-197 ÷ 198 = -0.9949494949494949
-0.9949494949494949 x 100 = -99.49%