-99.54% is the change from 218 to 1
Calculation steps:
[( 1 - 218 ) ÷ 218] x 100 = -99.54%
Formula
Percentage change = [(1 - 218) / 218] x 100
Subtract the new number by the original number
1 - 218 = -217
-217 ÷ 218 = -0.9954128440366973
-0.9954128440366973 x 100 = -99.54%