-0.45% is the change from 222 to 221
Calculation steps:
[( 221 - 222 ) ÷ 222] x 100 = -0.45%
Formula
Percentage change = [(221 - 222) / 222] x 100
Subtract the new number by the original number
221 - 222 = -1
-1 ÷ 222 = -0.0045045045045045045
-0.0045045045045045045 x 100 = -0.45%