-99.59% is the change from 243 to 1
Calculation steps:
[( 1 - 243 ) ÷ 243] x 100 = -99.59%
Formula
Percentage change = [(1 - 243) / 243] x 100
Subtract the new number by the original number
1 - 243 = -242
-242 ÷ 243 = -0.9958847736625515
-0.9958847736625515 x 100 = -99.59%