-9.13% is the change from 219 to 199
Calculation steps:
[( 199 - 219 ) ÷ 219] x 100 = -9.13%
Formula
Percentage change = [(199 - 219) / 219] x 100
Subtract the new number by the original number
199 - 219 = -20
-20 ÷ 219 = -0.091324200913242
-0.091324200913242 x 100 = -9.13%