-6.64% is the change from 226 to 211
Calculation steps:
[( 211 - 226 ) ÷ 226] x 100 = -6.64%
Formula
Percentage change = [(211 - 226) / 226] x 100
Subtract the new number by the original number
211 - 226 = -15
-15 ÷ 226 = -0.06637168141592921
-0.06637168141592921 x 100 = -6.64%