-99.52% is the change from 209 to 1
Calculation steps:
[( 1 - 209 ) ÷ 209] x 100 = -99.52%
Formula
Percentage change = [(1 - 209) / 209] x 100
Subtract the new number by the original number
1 - 209 = -208
-208 ÷ 209 = -0.9952153110047847
-0.9952153110047847 x 100 = -99.52%