-95% is the change from 220 to 11
Calculation steps:
[( 11 - 220 ) ÷ 220] x 100 = -95%
Formula
Percentage change = [(11 - 220) / 220] x 100
Subtract the new number by the original number
11 - 220 = -209
-209 ÷ 220 = -0.95
-0.95 x 100 = -95%
Example