-5.21% is the change from 422 to 400
Calculation steps:
[( 400 - 422 ) ÷ 422] x 100 = -5.21%
Formula
Percentage change = [(400 - 422) / 422] x 100
Subtract the new number by the original number
400 - 422 = -22
-22 ÷ 422 = -0.052132701421800945
-0.052132701421800945 x 100 = -5.21%