-3.98% is the change from 226 to 217
Calculation steps:
[( 217 - 226 ) ÷ 226] x 100 = -3.98%
Formula
Percentage change = [(217 - 226) / 226] x 100
Subtract the new number by the original number
217 - 226 = -9
-9 ÷ 226 = -0.03982300884955752
-0.03982300884955752 x 100 = -3.98%