-47.63% is the change from 422 to 221
Calculation steps:
[( 221 - 422 ) ÷ 422] x 100 = -47.63%
Formula
Percentage change = [(221 - 422) / 422] x 100
Subtract the new number by the original number
221 - 422 = -201
-201 ÷ 422 = -0.476303317535545
-0.476303317535545 x 100 = -47.63%