-45.57% is the change from 406 to 221
Calculation steps:
[( 221 - 406 ) ÷ 406] x 100 = -45.57%
Formula
Percentage change = [(221 - 406) / 406] x 100
Subtract the new number by the original number
221 - 406 = -185
-185 ÷ 406 = -0.45566502463054187
-0.45566502463054187 x 100 = -45.57%