-10.9% is the change from 211 to 188
Calculation steps:
[( 188 - 211 ) ÷ 211] x 100 = -10.9%
Formula
Percentage change = [(188 - 211) / 211] x 100
Subtract the new number by the original number
188 - 211 = -23
-23 ÷ 211 = -0.10900473933649289
-0.10900473933649289 x 100 = -10.9%