-21.24% is the change from 226 to 178
Calculation steps:
[( 178 - 226 ) ÷ 226] x 100 = -21.24%
Formula
Percentage change = [(178 - 226) / 226] x 100
Subtract the new number by the original number
178 - 226 = -48
-48 ÷ 226 = -0.21238938053097345
-0.21238938053097345 x 100 = -21.24%