-94.88% is the change from 215 to 11
Calculation steps:
[( 11 - 215 ) ÷ 215] x 100 = -94.88%
Formula
Percentage change = [(11 - 215) / 215] x 100
Subtract the new number by the original number
11 - 215 = -204
-204 ÷ 215 = -0.9488372093023256
-0.9488372093023256 x 100 = -94.88%