-99.53% is the change from 211 to 1
Calculation steps:
[( 1 - 211 ) ÷ 211] x 100 = -99.53%
Formula
Percentage change = [(1 - 211) / 211] x 100
Subtract the new number by the original number
1 - 211 = -210
-210 ÷ 211 = -0.995260663507109
-0.995260663507109 x 100 = -99.53%