-5.07% is the change from 217 to 206
Calculation steps:
[( 206 - 217 ) ÷ 217] x 100 = -5.07%
Formula
Percentage change = [(206 - 217) / 217] x 100
Subtract the new number by the original number
206 - 217 = -11
-11 ÷ 217 = -0.05069124423963134
-0.05069124423963134 x 100 = -5.07%