-4.87% is the change from 226 to 215
Calculation steps:
[( 215 - 226 ) ÷ 226] x 100 = -4.87%
Formula
Percentage change = [(215 - 226) / 226] x 100
Subtract the new number by the original number
215 - 226 = -11
-11 ÷ 226 = -0.048672566371681415
-0.048672566371681415 x 100 = -4.87%