-99.53% is the change from 215 to 1
Calculation steps:
[( 1 - 215 ) ÷ 215] x 100 = -99.53%
Formula
Percentage change = [(1 - 215) / 215] x 100
Subtract the new number by the original number
1 - 215 = -214
-214 ÷ 215 = -0.9953488372093023
-0.9953488372093023 x 100 = -99.53%